reverse-contraband
The opposite of contraband (desirable/valuable items which you do not own but wish to possess), this term refers to decidedly UNdesirable/useless items (heaps of trash, bald tires, hideous-looking/sloppy-fitting clothing, etc.) which ARE indeed legally yours, but which you strongly wish to get rid of.
I got busted for "non-possession of reverse-contraband" when I was attempting to dispose of a truckload of moldy mattresses by throwing them into a ravine.