Wrap a full sized chocolate bar with white wrapping paper and draw on the faces. For the earmuffs, use a black pipe cleaner and pom poms. Use buttons or black puffy paint and a cute ribbon and tag to complete the look.
Rudolph Wrapped Hershey Bar. I like the pipe cleaner idea, the other I saw used paper. I would just use brown paper, a red pom pom and maybe large-ish wiggle eyes. Too bad I don't have any of those things. lol.