Bonhommes de neige et empreintes de doigts Fingerprint snowman. This would be so much fun if they made all the snowmen themselves but had everyone in class make the parts. So, if there are 25 kids, they make 25 snowmen and each kid makes one.
Star Ornament for Kids - popsicle sticks, coffee stirrers - note recommendation for using glue vs glue gun. These are decorated with name; others with glitter glue. Washi tape covered sticks might be interesting.