"just"aMom-that's exactly what I was thinking about! I've seen my kids come home with them from parties. Only trying to write out a two digit number, so it's not a big deal. Want to keep this "cost effective,"
, so I'm considering reflective tape idea, fluorescent paint idea, glow necklaces, etc. A lot of the things online are for serious commercial uses and too expensive. I'd like to see, in person, what I'm buying. Thanks again to everyone for all the ideas.