Check out MyPretendPlace.com's easy and durable Astronaut Paper Mache Helmet craft. It's an extremely fun and cost effect project to do with your kids.
STEM Activity for Kids: How to Make Straw Rockets (w/ Free Rocket Template)- Fun for a science lesson, outdoor play activity, or unit on space! Great for students in a special education classroom. Work on oral motor skills as well as sensory play.