I bought a Chilly Towel. Paid $10 for it on nomorerack.com. Doesn't look like much, but it works! It's like a chamois material that stays wet a long time. Just wet it and wring out, snap it in the air, and it gets nicely cool. It doesn't have to be re-wet with every use, just snap it.

BTW ~ nomorerack.com is a great discount shopping website! If anyone wants to join, PM your email address to me before, and I'll refer you. We'll both get a $10 credit after your first purchase.