From Garbage to Garden

I will be working at a summer camp this summer and am so excited that I will be running the Culinary Studio.  I also will be starting a compost program for the camp, and since my county doesn't have a compost program yet, I get to take home all that green material for my home composting program.  I'm going to be taking pictures of the process and showing them at camp, and then at the end of camp giving some of the final produce to the campers to take home and plant something in it.  I want to turn composting into a game or competition, does anybody have any suggestions?  Any ideas would be greatly appreciated!