Make the cub scout rocket derby a blast.
Use an off-the-shelf home air purifier to
culture and grow mushrooms.
Protect your stuff with low-tech charm.
Working directly with DNA isn't only for the labs of CSI, agribusiness, and headline-grabbing research institutions. It's basic chemistry, but it uses the molecules of life. You can even do it at home. This project explains how you can isolate and even "fingerprint" some of your own DNA.
The Trip-Cam is a trip-wire triggered spy- and security camera. Sweet!
Reuse a cellphone car charger as a switch-mode power supply.
Fold a 6-number spinner from a sheet of letter-sized paper -- no cuts or glue.
Mod a flatbed scanner to take photos that deconstruct time and motion.
Hide a secret flash drive in an innocent AA cell.
Take a new twist on lemon juice.
A hollow bolt hides secret messages.
Here's a simple mod of a flatbed scanner to take photos.