Make constellations in a tube. I actually do this a lot when we have a spare tube for my kids and for my former daycare I would take dark construction paper scraps and just put it around roughly flat and use a pin to push in the outline of whatever the kids wanted...Great reward. They love it. Or you can, as I did for the older kids, let them select the constellation and I would punch it in. Great cheap activity to WOW any child.
Constellations - More ideas, samples from these sites: https://docs.google.com/file/d/0B8__TFE0yObfNmQ3NTA1NjUtYTdjMy00OGE5LTlkMzQtYjJmOWFjYjgzYzk2/edit?authkey=CJiFndEMhl=en#; https://picasaweb.google.com/lh/photo/LNs5RrNe63Q8J1FcnufJsw; http://www.notimeforflashcards.com/2013/07/glow-in-the-dark-stars-craft.html.