Thanks.
I have a few ideas, but ones that don't necessarily are restricted to one story. So if they interest anyone and they want to use them for the other stories.
1.) Clothes putting themselves on a mannequin. Dunno if the mannequin would move like a person, robot, or puppet.
2.) The old 'wear a costume and it influences your actions' plot. Put on a cheerleader costume, get urges to perform a cheer. Put on a catwoman costume, get urges to tie up people, seduce them, and steal from them.
3.) The clothes are a hivemind. The more clothes magically active, the smarter the hivemind gets, and the more personality shifts the hivemind gets.
I had more, but I can't quite remember what they are.