Mismatch ideas?

OK, so my school has this thing for Dr. Seuss and stuff called Read Across America week. We do crazy stuff all week. I love it! Monday was Crazy Sock Day, today was Destination T-Shirt day, and tomarrow is mismatch day. On Mismatch day we are supposed to go in looking all crazy and stuff. I need some ideas on how to dress for it. Please help!