diff --git a/Unit testing/billy_objects_tests.cpp b/Unit testing/billy_objects_tests.cpp
index e91159b..c19d918 100644
--- a/Unit testing/billy_objects_tests.cpp	
+++ b/Unit testing/billy_objects_tests.cpp	
@@ -148,21 +148,7 @@ TEST_CASE("[D] Pushing popping BillyObjects", "[pushpop][0]") {
 }
 
 TEST_CASE("[D] Printing Billy's objects", "[printing]") {
-    constexpr std::array<BillyObjects::billyObject, 12> all_objects{
-            weapons::Sword,
-            weapons::Lance,
-            weapons::Morgenstern,
-            weapons::Bow,
-            equipments::Chainmail,
-            equipments::CookingPot,
-            equipments::PamphletTourist,
-            equipments::MedicKit,
-            tools::Fourche,
-            tools::Dagger,
-            tools::RockClimbingKit,
-            tools::SackOfGrain,
-    };
-    for (const auto &object: all_objects) {
+    for (const auto &object: BillyObjects::all_objects) {
         REQUIRE_NOTHROW(BillyObjects::billy_object_to_string(object));
     }
 }
diff --git a/include/billy_objects.hpp b/include/billy_objects.hpp
index fcf8c3b..1d47850 100644
--- a/include/billy_objects.hpp
+++ b/include/billy_objects.hpp
@@ -49,6 +49,21 @@ namespace character {
         using billyObject = std::variant<weapons, equipments, tools>;
         using container = ankerl::svector<billyObject, max_num_obj>;
 
+        static constexpr std::array<BillyObjects::billyObject, 12> all_objects{
+                weapons::Sword,
+                weapons::Lance,
+                weapons::Morgenstern,
+                weapons::Bow,
+                equipments::Chainmail,
+                equipments::CookingPot,
+                equipments::PamphletTourist,
+                equipments::MedicKit,
+                tools::Fourche,
+                tools::Dagger,
+                tools::RockClimbingKit,
+                tools::SackOfGrain,
+        };
+
         static constexpr std::string_view json_key{ "billy_objects" };
 
         static constexpr std::string_view sword{ "Sword" };
@@ -76,7 +91,7 @@ namespace character {
 
         ~BillyObjects() noexcept = default;
 
-        void push_object(const billyObject &object, CharacterSheet &sheet) noexcept;
+        [[nodiscard]] bool push_object(const billyObject &object, CharacterSheet &sheet) noexcept;
 
         void pop_object(CharacterSheet &sheet) noexcept;
 
diff --git a/include/character_sheet.hpp b/include/character_sheet.hpp
index cd608b9..b043f0a 100644
--- a/include/character_sheet.hpp
+++ b/include/character_sheet.hpp
@@ -5,7 +5,9 @@
 #include "characteristic/endurance.hpp"
 #include "characteristic/chance.hpp"
 #include "characteristic/habilete.hpp"
+#include "billy_objects.hpp"
 #include <random>
+#include <unordered_set>
 
 namespace gui {
     class Gui;
@@ -23,7 +25,7 @@ namespace character {
     private:
         friend gui::Gui;
 
-        friend class BillyObjects;
+        friend BillyObjects;
 
         std::mt19937_64 engine{ std::random_device{ "rdseed" }() };
 
@@ -39,6 +41,13 @@ namespace character {
 
         characteristic::Habilete habilete;
 
+        BillyObjects::container objects;
+
+        std::unordered_set<BillyObjects::billyObject> available_objects{
+                BillyObjects::all_objects.cbegin(),
+                BillyObjects::all_objects.cend()
+        };
+
         std::uint32_t health_point{ 0 };
 
         std::uint32_t armor{ 0 };
@@ -79,6 +88,8 @@ namespace character {
 
         [[nodiscard]] const characteristic::Habilete &get_habilete() const { return habilete; }
 
+        [[nodiscard]] const BillyObjects::container &get_objects() const { return objects; }
+
         [[nodiscard]] classe get_current_class() const {
             if (nb_weapons >= 2) {
                 return classe::Guerrier;
@@ -121,6 +132,7 @@ namespace character {
             j.at("nb_weapons").get_to(billy.nb_weapons);
             j.at("nb_equipments").get_to(billy.nb_equipments);
             j.at("nb_tools").get_to(billy.nb_tools);
+            BillyObjects::from_json(j.at(BillyObjects::json_key), billy.objects);
         }
     };
 
@@ -139,6 +151,8 @@ namespace character {
         j["nb_weapons"] = billy.get_nb_weapons();
         j["nb_equipments"] = billy.get_nb_equipments();
         j["nb_tools"] = billy.get_nb_tools();
+        j.emplace(std::pair{ BillyObjects::json_key, json::array() });
+        BillyObjects::to_json(j.at(BillyObjects::json_key), billy.get_objects());
     }
 }
 
diff --git a/include/gui/gui.hpp b/include/gui/gui.hpp
index 60f8284..1e24fe6 100644
--- a/include/gui/gui.hpp
+++ b/include/gui/gui.hpp
@@ -3,6 +3,7 @@
 
 #include <filesystem>
 #include "gui/menu/menu.hpp"
+#include "billy_objects.hpp"
 
 namespace fs = std::filesystem;
 
@@ -24,6 +25,8 @@ namespace gui {
     private:
         GuiData &data;
 
+        character::BillyObjects deal_objects{};
+
         menu::Menu menu;
 
         const fs::path font;
diff --git a/src/billy_objects.cpp b/src/billy_objects.cpp
index 872649a..a08be7e 100644
--- a/src/billy_objects.cpp
+++ b/src/billy_objects.cpp
@@ -17,9 +17,10 @@ constexpr std::uint32_t toolsHash = const_hash("tools");
 namespace character {
     using characteristic::Characteristic;
 
-    void BillyObjects::push_object(const billyObject &object, CharacterSheet &sheet) noexcept {
+    bool BillyObjects::push_object(const billyObject &object, CharacterSheet &sheet) noexcept {
         if (sheet.objects.size() < 3) {
             sheet.objects.emplace_back(object);
+            sheet.available_objects.erase(object);
 
             auto &local_habilete = static_cast<Characteristic &>(sheet.habilete);
             auto &local_adresse = static_cast<Characteristic &>(sheet.adresse);
@@ -53,13 +54,16 @@ namespace character {
                                 plus);
                     },
             }, object);
+            return true;
         }
+        return false;
     }
 
     void BillyObjects::pop_object(CharacterSheet &sheet) noexcept {
         if (!sheet.objects.empty()) {
             const billyObject obj = sheet.objects.back();
             sheet.objects.pop_back();
+            sheet.available_objects.insert(obj);
 
             auto &local_habilete = static_cast<Characteristic &>(sheet.habilete);
             auto &local_adresse = static_cast<Characteristic &>(sheet.adresse);
@@ -109,6 +113,7 @@ namespace character {
                 localEndurance.materiel = operation(localEndurance.materiel, 3);
                 break;
             case tools::Dagger:
+                sheet.critique = operation(sheet.critique, 6);
                 break;
             case tools::RockClimbingKit:
                 localAdresse.materiel = operation(localAdresse.materiel, 1);
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 32f3f77..fcb58ef 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -174,32 +174,96 @@ void gui::Gui::stat_second_menu() noexcept {
     ImGui::EndChild();
 }
 
+template<typename MaterielEnum>
+constexpr std::string_view combo_label() {
+    using character::weapons;
+    using character::equipments;
+    using character::tools;
+    if constexpr (std::is_same_v<MaterielEnum, weapons>) {
+        return "Weapons";
+    } else if constexpr (std::is_same_v<MaterielEnum, equipments>) {
+        return "Equipments";
+    } else {
+        return "Tools";
+    }
+}
+
+template<typename MaterielEnum>
+constexpr std::string_view material_child_win_id() {
+    using character::weapons;
+    using character::equipments;
+    using character::tools;
+    if constexpr (std::is_same_v<MaterielEnum, weapons>) {
+        return "weapons";
+    } else if constexpr (std::is_same_v<MaterielEnum, equipments>) {
+        return "equipments";
+    } else {
+        return "tools";
+    }
+}
+
+template<typename MaterielEnum>
+void generic_combo_menu(character::CharacterSheet &billy,
+        std::unordered_set<character::BillyObjects::billyObject> &availableObjects,
+        character::BillyObjects &dealObjects) noexcept {
+    using character::BillyObjects;
+
+    static auto selected = std::find_if(availableObjects.cbegin(), availableObjects.cend(), [](const auto &billyObj) {
+        return std::holds_alternative<MaterielEnum>(billyObj);
+    });
+    ImGui::BeginChild(material_child_win_id<MaterielEnum>().data(),
+            ImVec2(ImGui::GetWindowWidth(), 0),
+            ImGuiChildFlags_AutoResizeY);
+    if (ImGui::BeginCombo(combo_label<MaterielEnum>().data(),
+            BillyObjects::billy_object_to_string(*selected).data(),
+            ImGuiComboFlags_WidthFitPreview | ImGuiComboFlags_PopupAlignLeft)) {
+        for (auto iterator = availableObjects.cbegin();
+             iterator != availableObjects.cend(); ++iterator) {
+            if (!std::holds_alternative<MaterielEnum>(*iterator)) {
+                continue;
+            }
+            const bool is_selected = selected == iterator;
+
+            if (ImGui::Selectable(BillyObjects::billy_object_to_string(*iterator).data(), is_selected)) {
+                selected = iterator;
+            }
+
+            if (is_selected) {
+                ImGui::SetItemDefaultFocus();
+            }
+        }
+        ImGui::EndCombo();
+    }
+
+    ImGui::SameLine();
+    if (ImGui::Button("+")) {
+        if (dealObjects.push_object(*selected, billy)) {
+            selected = std::find_if(availableObjects.cbegin(),
+                    availableObjects.cend(),
+                    [](const auto &billyObj) { return std::holds_alternative<MaterielEnum>(billyObj); });
+        }
+    }
+    ImGui::EndChild();
+}
+
 void gui::Gui::materiel_menu() noexcept {
+    using character::BillyObjects;
+
     ImGui::BeginChild("materiel",
             ImVec2(ImGui::GetWindowWidth() / 3, 0),
             ImGuiChildFlags_Border | ImGuiChildFlags_AutoResizeY);
     ImGui::Text("Matériel");
 
-    ImGui::BeginChild("weapons", ImVec2(0, 0), ImGuiChildFlags_Border | ImGuiChildFlags_AutoResizeY);
-    ImGui::Text(character::BillyObjects::sword.data());
-    ImGui::Text(character::BillyObjects::lance.data());
-    ImGui::Text(character::BillyObjects::morgenstern.data());
-    ImGui::Text(character::BillyObjects::bow.data());
-    ImGui::EndChild();
+    generic_combo_menu<character::weapons>(data.billy, data.billy.available_objects, deal_objects);
+    generic_combo_menu<character::equipments>(data.billy, data.billy.available_objects, deal_objects);
+    generic_combo_menu<character::tools>(data.billy, data.billy.available_objects, deal_objects);
 
-    ImGui::BeginChild("equipments", ImVec2(0, 0), ImGuiChildFlags_Border | ImGuiChildFlags_AutoResizeY);
-    ImGui::Text(character::BillyObjects::chainmail.data());
-    ImGui::Text(character::BillyObjects::cooking_pot.data());
-    ImGui::Text(character::BillyObjects::pamphlet_tourist.data());
-    ImGui::Text(character::BillyObjects::medic_kit.data());
-    ImGui::EndChild();
-
-    ImGui::BeginChild("tools", ImVec2(0, 0), ImGuiChildFlags_Border | ImGuiChildFlags_AutoResizeY);
-    ImGui::Text(character::BillyObjects::fourche.data());
-    ImGui::Text(character::BillyObjects::dagger.data());
-    ImGui::Text(character::BillyObjects::rock_climbing_kit.data());
-    ImGui::Text(character::BillyObjects::sack_of_grain.data());
-    ImGui::EndChild();
+    for (const auto &object: data.billy.get_objects()) {
+        ImGui::Text("%s", BillyObjects::billy_object_to_string(object).data());
+    }
+    if (ImGui::Button("Remove last object")) {
+        deal_objects.pop_object(data.billy);
+    }
 
     ImGui::EndChild();
 }