This activity can be for a wide variety of ages. My toddler was able to put marshmallows on his too but eventually he figured out it was tasty and he ate all his marshmallows.
An easy Halloween craft with a tasty snack on the side. :) I'm sure your kids will love this activity!
The funny part is the next day they were on the fridge and my toddler kept trying to sneak marshmallows off of them. Good thing glue is non toxic! :) (He did that last year when we made marshmallow snowmen.)
A big thank-you to http://www.toddlerapproved.com/ for giving me this idea...another pintrest find! :)