Sometimes the simple things are the best:
The PrimoGraf is a hand cranked drawing machine. Using wooden gears with prime number based gears an infinite array of drawings can be made. It comes complete with 7 gears, 2 set of rods and penholders so you can create many variations. Different setups can be achieved instantly by simply picking different holes.
Made of walnut, basswood, and solid brass and hand crafted in Portland, Oregon.
[via Boing-boing]


Recording motion in the form of moving pictures has gone through many stages. It started out as chemically processed film and was eventually replaced by analog magnetic tape. As time passed and technology advanced, the magnetic tape was replaced by digital memory devices with no moving parts and a much lower cost.
This like DIY has been floating around the ‘net for a while now and if you have any solid silver coins that are now in mint collectors condition you couls make one of these. Looks very easy and you don’t need too mamy special tools (a hammer and a moto tool are the biggest)