You can find them a number of places on the Web. Just sugar cookies and slightly microwaved marshmallows. I confess my 'snow' frosting could be whiter, but I don't really like royal icing. I prefer a good vanilla butter cream, so its a bit cream colored. (isn't there something about not eating yellow snow....)
They were certainly a hit with the teachers when I brought them in this morning. I hope Will's classmates like them just as much.