Homemade wooden devices
A certain Matthias Wandel from Canada is fond of creating various machines and devices made of wood.
The first device I stumbled upon was a device created using Lego's constructor to make rows of domino wooden knuckles.
it seemed like a rather fun device - I searched and found a site on which weekly (at least, as Matthias promises) he uploads a description of a new wooden device.
Since we have an IT-site, consider the corresponding devices:
We look in action
Commodore 64 joystick
Perhaps there are no over achievements, but still very, very worthy. Moreover, all the examples are described in detail, for some there are even drawings and diagrams.
Again, Matthias Wandel's Woodworking website