According to my father's memory of his childhood (admitteldy a not altogether reliable oral history, but in this instance I at least am not making up stories!) a wonk is a small furry toy closely related to the more common gonk.

ON a separate note, in British English at least, 'wonky' means 'not straight' or 'not the way it should be'.

I am finding it hard to relate either of these pieces of lore to tsuwm's definition.