Host an auction with all donated items and services, using $1 tickets for bidding.
Get stores and businesses to donate items, gift certificates and services. Host the auction where people can purchase tickets for $1.00 each. They then place as many tickets as they want in container for item they would like to win. Draw out a ticket for each item for the winner. This is 100% profit. Groups can also sell hot dogs, drinks, bake goods, etc.