minimal stairs, not exactly like this but space saving Simple Staircase in Belgium Mini House. These stairs take up very little space thanks to a pivoting design with a (very) small platform at the bend.
How to build a simple, inexpensive vertical-axis wind turbine The Zoetrope is a vertical-axis wind turbine (VAWT) made from materials commonly found at your local hardware store and a few easily purchased online, and Applied Sciences
Dry Leaf Chair design by Wilmer Chaca. Is a very cool and beautiful chair. First, he design and mold the white plastic for chair support, then used aluminium design for another chair support and seat back. After complete join the both shape together.
Hot water tank heated by wood burning stove. From Teach Nollaig, Tiny house in Ireland. Could be improved by adding a small sterling engine to power a circulation pump, allowing the hot water tank to be up higher [improving pressure]. Also INSULATION!