Glow Sticks. I planned to make a star shape, Bobo had other plans. I found these at the dollar store and they lasted 2 days! Bobo retrieved them from the bath trash last night and said, "Mama, these still wuk."
Button planet sorting. I've come to the conclusion that I wear very drab clothes from the color of buttons I've accumulated over the years.
Drawing constellations. Bobo made these star shapes last week using the hole puncher. The black paper has a lightning crayon that came from a Harry Potter coloring book.
Making a galaxy with stamps.
Glowing play dough shapes on the black light table.
Planet paint. Mix equal parts glue and shaving cream.