Hurl It Into The Sun: Don’t. Just don’t. Those belong to people, who will be very upset if you go around dumping your trash in there willy-nilly and giving their star indigestion. (Which, granted, would take an awful lot of trash, but still.)
Give a hoot. Don’t pollute.
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On the other hand, dumping it in a black hole is an excellent idea, as it will just be converted into hawking radiation (eventually) anyway.