YouTube channel Never Too Small is packed with great examples of highly-efficient living spaces. Among the designs is this 33 square meter Hong Kong apartment, which has a treehouse structure above the dining table. The cozy lofted bedroom is lined with pine wood to keep it from feeling cramped.
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.