rigorousintuition.ca

Everything from "homemade infrared goggles" to homemade vanilla extract/homemade cola beverage/homemade you-name-it.

http://www.instructables.com/

Here's another site along similar lines, reminiscent of Carla Emery:

Wind In The Roses

John at the Field Lab.
http://thefieldlab.blogspot.com/