The 555 Footstool commemorates one of the most iconic integrated circuits ever produced. Since its introduction in 1971, electronic hobbyists and tinkerers have found endless applications for it: timing, flashing, oscillating, measuring, tone/sound effects generation, etc. Check out the winning entries in a recent 555 design contest.
posted by Rhomboid on Jun 30, 2011 - 34 comments

Egg Timer. Instructions here, not that you need any.
posted by william_boot on Feb 28, 2009 - 42 comments

Running From Camera The rules are simple: I put the self-timer on 2 seconds, push the button and try to get as far from the camera as I can. [via]
posted by Pater Aletheias on Jan 14, 2007 - 61 comments