Know-How Exchange : Taglines/Names

We are a public school that throws a big auction fundraiser in the spring. We are stuck on finding a tagline that will carry us through many more auctions without using the word Auction. We want something that works for our school that tells parents to bid big but to have fun. The money raised all goes to our PTA to help our teachers, our children, our extra projects, etc. Any help with something like this would be much appreciated