Inspired by Disney Family.com, via Margo Tantau, to make apple smiles:
It's not the best picture, but it was still dark when I made this, and I might have still been a little out of it! Since the treats were going into a lunchbox, I used lemon juice to keep the apples from browning and added a toothpick to keep things intact till lunch time (my daughter reports they held up well!). The directions called for cutting the apple into 8ths, but I cut it into 16ths, and that made for more reasonably-sized "lips." You're supposed to use peanut butter to hold the marshmallow teeth in place, but since we can't use that around here, she got Nutella instead. It is very helpful to dry the surface of the apple before spreading on whatever you're using as the glue. I tried to keep the Nutella away from the edge of the apple slice because I didn't want a "betel nut" appearance, but you can see a little of it anyway.