DIY Rocket ship photo booth at a space themed birthday blast off party. Use a few cardboard boxes covered in blue plastic tableclothes and spraymount a foamcore rocket ship on front. Cut a porthole in.
Comet craft: First, have kids use black construction paper with crayons and draw planets and stars. Cut styrofoam balls in half, cover in foil and glue to paper. Use glitter glue pens (or glue with sprinkled glitter) for the tail of comet.