You can make astronaut pin-back buttons out of print materials from the school or science centre. Space buttons can make a good addition to a science fair if you put them out in a bowl on the table next to your bristol board and other presentation material. “Teacher; this is totally not a bribe!”
Why not make an astronaut button of your favorite space person like Chris Hadfield, or you can cut out pictures from old science fiction comic books, or photos from the night sky at camp, or… The possibilities are pretty much like space – endless!
What would happen if you were wearing a space pin-back button in space and something got poked?