Masking tape

Lensless Microscope

Lensless Microscope

Inside your webcam is an imager chip with thousands of sensors, each much smaller than a hair. Replace the lens with an LED, place a sample directly on the the chip, and you have a lensless microscope capable of streaming live video of plankton or other microorganisms to any display.

Cosmic Night Light

Cosmic Night Light

Make a glittering LED constellation jammed in resin —- with no soldering!

Backyard Biodiesel

Backyard Biodiesel

Biodiesel is vegetable oil (often used) that’s been chemically converted into a fuel thin enough to spray through a diesel fuel-injection system. No special equipment is needed to “cook” a small batch of biodiesel that will work in any diesel engine, from a model airplane to the family car.