why would you give him back all the cards etc that he has given you? That seems really petty and like you are trying to prove something to him.
If there were gifts he gave you that you don't want out right now, put them in a box and save them for when you might want them...when your boys ask where that stuff they helped pick out went.
when you pack up everything they gave you and give it back to them, you come off looking like a bratty child who didn't get their way...
