Well a Hohner Clavinet with a whammy bar! I would like to see the hood up on that beast, and who knows how the whammy bar works across that many strings and how the instrument manages to stay in tune.
Now off on a Hnedrix tangent, what about a My First Sony children's cassette recorder in the hands of crazy Swiss woman, Erika Stucky, backed by the Euro-Industrial band, The Young Gods, here on acoustic guitars and toy megaphones? The boys look pretty kazooed!