Quentin and I made popcorn balls today. This recipe, from Martha Stewart's Living October 2004, is much easier to make with kids helping because it doesn't require candy thermometers, perfect timing and the like. (But it did steal a lot from the Rice Krispies treats recipe, I think.)
4 tbsp butter, plus more for hands
1 bag (10 oz) miniature marshmallows
1/4 cup brown sugar
3 quarts popped popcorn
1 cup M&Ms
Line a baking sheet with parchment paper, and set aside. Melt the butter in a large heavy-bottom pot over low heat. Add marshmallows and brown sugar; stir until melted and combined. Remove from heat.
Add popcorn, and candies if desired; toss until well combined. With buttered hands, shape into 2 1/2-inch balls. Let harden slightly on baking sheet. After hardened wrap in cellophane bags and tie with black and orange ribbons.
(I added orange food coloring to the mix above to make the balls look like pumpkins, but that wasn't part of the original recipe.)