No matter what, whether you tell guests no gifts, direct guests to a gift registry, or have a wishing well, at each wedding there is bound to be a gift given to the couple which was not asked for - I'm talking the toaster oven you didn't need, the set of champagne glasses you don't have room for, the crockery that doesn't go with anything you own etc.
What did you do with your unwanted gifts? Did you keep them? Exchange them? Re-gift them? Donate them?