UniversalInventorySystem VS Graphene

Or do you mean a List or List[] you can't be this ambiguous about your terminology? I don't know what you mean by 'shapes', do you mean gameObject or do you mean meshes or some other data type? For finding things, with an array or List you kinda have to check every entry until you find the correct thing, so if you're looking for an int that is between 6-8 you have to check each int using a for or foreach loop. If you want to set something to equal a random entry, You can use Random.Range(0, collection.Length); for example and it will give you a random entry in that collection. Unity will actually serialise most arrays or lists so long as they're public or marked as a serializable field, so you can actually see what's in them in the inspector. You have the ability to write to the console to tell you all the entries. However a lot of inventories will use a Dictionary as it scales a lot better for searching. There are tons of examples of inventory systems out there for you to look at https://github.com/devdogio/Inventory-Pro https://github.com/Heymity/UniversalInventorySystem https://github.com/slopezpereyra/Item-InventorySystem-Unity3D https://github.com/nzhul/inventory-system But you probably won't understand how they work.

Oh yeah I am really looking forward to it becoming a standard. It's still in preview and lacks some features so I decided to not use it. Some poeple have even started making frameworks on top of it too like this: https://github.com/LudiKha/Graphene which is amazing.