While I think I’ve seen most of these celebrity pinball machines, this is the only one I’ve actually played:
The monowheel concept has been around over a hundred years, but it hasn’t ever really improved on things we’ve already got. Modern ones tend to be motor-powered, but the guy below put together this pedal-powered monobike as a design project:
Personally, in my technical eye, the gearing ratio from pedal to gears to wheel is much, much too small; the reason there’s a small gear at the back of a bike is because the big wheel is attached to it and spins once for every time the small gear spins, but you can’t transfer that to the monobike design seen here; the monobike above counteracts the gear-reduction with that tiny, tiny ‘pusher’ wheel the transfers the energy to the big wheel. I can’t imagine a human ever being able to pedal fast enough to stay upright Huge pedal gear, tiny transfer gear, huge ‘pusher’ wheel…Gosh, darn it — now I’m designing one. I gotta stop thinking so much.
Really, if you know what a pinhole camera is, you can easily find many more varied, useful, and informative internet content — but this article from Low-Tech Mag does a nice job of condensing it for the masses, while tossing in some excellent examples of the process.
This is an awesome little find from RetroThing: a Fisher-Price battery-powered, Sesame-street themed record player. The little bird on the tone arm appears to play with his beak, a’la Flintstones. The parts are remiscent of the standard Fisher-Price record player of the time; I can’t remember if it was battery-powered, too. I’ve got one of the standard FP players (amongst others) — RetroThing recommends using it as a ‘tester’, when out and about buying record albums. Good thinking!