Purchase the plastic bowl that fits in a child's potty training chair (they sell them at places like KMart). Wash the bowl and prepare lemon jello per package directions. Float miniature O-Henry bars in it, refrigerate, and serve. Get the picture?
Next fun recipe. Have you ever seen a recipe for Aquarium Jello? You take blue jello, make it in a clean glass aquarium bowl. Float gummy fish and plastic people for swimmers and plastic plants and stuff. Well, what we'd do for a Halloween party would be to make a Toxic Aquarium. Mix orange and blue jello to get a sickly shade of green. Lifesavers make old tires and you can toss in other junky things for trash on the bottom of the sea. Something barrel-shaped for that illegally dumped toxic waste. Float your fish upsidedown on top, and add a plastic skeleton or two. Haven't figured out a good way to put something on the bottom to represent the sand, tho