My wife loves to make Flip-Flops in school colors. She buys the flip-flops, ribbon and hand-makes each pair. If you want to pump-ip school spirit, please send her an email for details.
Send it to JAN at fastpitchcentral.com with a subject heading something like Flip-Flops in my school colors. In general they cost around $10 a pair - no more as far as I know. (Ah well, I'll probably get in trouble telling you that.)