Amazon has these 40mm Crystal Ball Prisms on sale for only $3.60 shipped right now! I grabbed one for each of my children last year and they’re great! They’re very good quality and make amazing rainbows! You could lace some string through them to turn them into ornaments or pick up a few as stocking stuffers. We have had a lot of fun with ours!
Prices at Amazon can flip fast, so don’t wait too long if you’re interested! And don’t forget to use your Amazon gift certificates from Swagbucks to get an even better deal!