Very young children are entertained by crafts that are easy to assemble. Moisten a sponge with paint. Push a star-shaped cookie cutter into the sponge and then press the cookie cutter onto a piece of blank paper to create stars. Various space shapes are available at baking supply stores and these can include shapes of the moon, sun and planets. Use black paper for extra effect that will trigger your child's imagination.
Most children, and adults for that matter, are amused with the idea of martians and spaceships. Glue the edges of two paper plates together and then glue the curved plastic lid of an iced beverage onto the center top of the top plate. Glue on colorful beads and pieces of tinfoil at various locations of the top of the plate.
Children who play "Invasion from Outer Space," can choose to be a martian soldier, who kills people with ray guns, or a carnival hero, who fights off the evil invaders. In "The Awful Green Things From Outer Space," children fight each other on board a spaceship. One of the players represents the ship's crew, who are trying to kill the martians, and the other player is the aliens, who are multiplying on the ship.
Children can let their imaginations go wild by watching an assortment of space movies and TV shows. "Star Wars" and "Star Trek" are a couple of the most famous productions of all time and, while the storyline may be too complex for younger children, they are particularly entertaining to older kids. Young children can watch movies such as "Wall-E," "Fly Me to the Moon," "Space Chimps," "Star Wars: The Clone Wars" and "Zathura."