Does anyone in your community have a special collection? Perhaps a collection of memorabilia from a favorite sports team or movie? Or maybe a collection of one of a kind pedal cars?
Why not ask them to donate a "tour" as an auction item. Since any collector will be a wealth of knowledge on the items that they have collected, in addition to seeing the collection, the buyer of the tour will be treated to special insider facts which will make their visit a special outing.