M.B.
I would rent a place maybe at a church or community center or park etc.(the ones with kitchens in it) They usually are very inexpensive! have a radio for music(everyone loves music) make a cake yourself and make two or three hot foods and drinks and your set! You can really do all of this for not a lot of money.... just don't be afraid to ask a close friend or relative to help you organize the event. Good luck!
-M.