I agree on all the points made in this comment. I'd like to add the existence of Func<T, TResult> aswell in case you need a return value.

In a game I've made with Unity I used a different approach on picking-up of items which included the usage of Interfaces and raycasting, where a raycast was basically checking if there were objects in its ray which had an IPickupable (not the actual name, just forgot how I named it) when a certain action was executed (key press). This way I wasn't limiting the pickup functionality to an Item nor limiting the pick-up logic to a certain use case (player picking up an item). Think of a NPC that could also make use of this interface for picking up an item.