How do I host a housewarming party?

When our church has a housewarming we usual y have every one bring some finger food. Some of the things that come are meatball in a sauce made with piqcanti sauce mixed with grape jelly kept hot in a crock pot. It is very good. some one brings flour tortillas pin wheels with cream cheese and thinly sliced ham. fruit and vegetable trays are good too We do it this way sort of as an open house