C.K.
I don't know what kind of yard set up you have, but what about an at home drive in movie. You can rent projectors and portable DVD players (look for electronics rentals in the Yellow Pages). Get some new releases or old favorites.
Set up a big white sheet against the house, garage, or just hang it from a high clothesline and project the movie. (You might also want to attach some external speakers)
Pop popcorn and have "movie snacks" = pizza, Goobers/Raisenettes, etc.