I'm going to steal a mountain dew voltage can from my roommate but put a $1 bill on the box
What will you do after you take it?
I'm going to put a full can in this box right next to this empty can.
If you steal from your roommate he won't trust you anymore.
I'll just say that I found a damaged can and that I am returning it to the store.
The easier solution is to ask him if you can buy the can off of him and offer to replace it as well. Your roommate will likely be glad that you asked before stealing from him.