I made "Lumps of Coal" using a recipe from Sweet Peas Kitchen and they were SO easy. Crushed Oreos, marshmallows and butter. That's it. It made a 9x9 pan of them and I cut them into pieces that were about an inch square. They were a huge hit.
photo courtesy of Sweet Peas Kitchen
I also made "Reindeer Feed" using a recipe from Betty Crocker. Chex cereal, white almond bark and crushed candy canes. Talk about a win-win.
photo courtesy of Utah Deal Diva
I recommend both recipes. They were easy and didn't take much time at all. Start to finish probably an hour, but that was because of the 20 minute dry time.