QZ qz thoughts
a blog from Eli the Bearded
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Build a "Square Incher" Microkite

Plans for a mylar kite with with a surface area of about one and a half square inches (on each side). Perfect for a kite to fly in the breeze of your computer power-supply fan. (I used mylar from potato chip bag for mine.)

dead link: http://www.vientocero.com/kpb/planos/micropln/micropln.html

Mechanical Television in Colour

This hobbiest has recreated a mechanical television (a moving light is rapidly turned on and off by radio signal to create an image), put a pair of eye holes in for stereoscopic images, added spinning RGB filters to add color, and built a mechanical camera too.

dead link: http://www.radiocraft.co.uk/3dcolour.htm