UFO by Andrea Ruggiero here means Unidentified Feeding Object. It is a picnic plate made of a mixture of blended birdseed, potato starch, guar gum and seaweed as binding agent.
After use, the UFO plate can be discarded anywhere. The proper way is to throw it up in the air and into the bushes so that it breaks into small pieces and thus becomes food for the birds, squirrels or rats. I call that truly hassle-free eating!