Ball-in-Cage Alarm Switch
Protect your stuff with low-tech charm.
Wire strippers
Dummy Camera
Use a 555 timer to make an LED blink like the one in a security camera.
The Most Useless Machine
Through its one meaningless act of defiance, it speaks volumes.
Lego Recharger
Keep your gadgets juiced and your keys from getting lost.
Elastic String Bass
Optically amplified rubber band twang.
Night Lighter: See-Thru Potato Cannon
Launch projectiles 200+ yards with a high-powered spud gun.
Wind Generator
With a motor and some piping, it’s easy to enjoy free energy forever.
