A gonk is an egg-shaped furry novelty toy with googly eyes and small arms and legs that was popular in the 1960s. They were created by Robert Benson and Sheila Stanton. They were associated with Op art, hep and mod culture.
Gund sold Gonks in the US, including inflatable vinyl versions. Gonks were also homemade.
They were featured in the film title design of the 1965 film Gonks Go Beat.
What's it worth? Take a look at this Gonk price guide: sold listings for a value indication.