Are there any tricks out there that I can do with cufflinks?
Are there any tricks that utilize gaffed cufflinks? (ie, they change color, re-attach themselves, swap places, etc.)

Try getting in contact with James Brown.
He can steal them and makes a coin change into them.

Well, considering he's dead, wouldn't that be more of a seance show?

Think thumb tip. Lots of idea,s should come to you. Tranformation, vanish, linking etc.