Here is one of my projects from last Christmas - a yummy Marshmallow wreath!
Here's what you need: a styrofoam wreath, toothpicks, ribbon, and a whole LOT of Marshmallows! The process I found to work the best was to stick about 10 toothpicks into the wreath a time and then to push the marshmallows onto the wreath. (Also, you only put the marshmallow's on the tops and side of the wreath, the back is flat!)
Too bad it didn't last a whole year... Guess I'll just have to make another one!