Inventory with Pick and Place

Good afternoon everyone.
First I apologize for my English.
I would like to know the following.
How to Make an inventory item and you can get the item and then put.
Only when you place the item, it has a location of choice where it will be placed.
Similar to the play yard of Monsters, however my game will be in 3D.
Remembering that I am new in the games area.
I thank the help of all.