Zonk

A Zonk is an unwanted booby prize from Let's Make a Deal, and the only prize on a game show that is worth nothing.

Very early in the show's history, the worthless gag gifts given to contestants who had made a wrong decision were not referred to by name. At some point, the show began calling these items Zonks. Those were those items that were:

Live animals, including everything from farm to zoo animals.

Large props, such as moose heads and giant "crying towels."

Various items "for every day of the week" such as fur-covered garbage cans, washboards and washtubs, etc.

Junked furniture, musical instruments, appliances and cars.

Ridiculously large amounts of food.

Trips to non-existent destinations.

Fake furs, fake currency from other countries (or play money), etc.

"Your own ..." item(s) the contestant owned. For such deals, the host would ask the contestant for a given item, such as a purse or pair of shoes and the item being taken backstage; the deal's last segment invariably ended with the Zonk being the "your own" item(s).

...and much, much more.