ShapeLock! Create what you need. Easy.

Ugly website, beautiful product! ShapeLock is a super strong plastic similar to Nylon or Polypropylene in toughness. However, unlike the two former plastics it does not need high temperatures or high pressures to form into useful shapes. ShapeLock is easily hand-formed into shape at just 70°C (150°F).

Today I ordered 500g (yes, the ship internationally), and have no idea what to make of it. Time will tell.

Update: They do NOT shop internationally, money was refunded to my paypal account.

Here is an article where they used it to create a machine that clones itself to a machine that clones it self to a machine that... well, you get the picture. At the same site you can also read more about shapeloc/friendly plastic, and where to get it.

Note: Get your free sample here (you pay for the shipping)