Smartphones and tablets pack computing power in a small form factor. But if you prefer the look of a desktop computer, watch this brief clip from Creativity Buzz, showing how to build a tiny PC with just a few inexpensive parts. Full build details here.
What you’re looking at here is a teensy, tiny, fully-functional steam engine that’s so small that its base is an old copper penny, and some of them have a flywheel made from a shilling coin. The miniature engine can run on steam or compressed air, and was built by Phil Gravett.