Here’s a pretty neat idea- inflatable laptop bags. Next visit to the mega-mart I’ll look for something cheap to make one out of clear plastic and then just inflate the whole thing while I’m traveling to expedite my trip through security. Although I suspect it might actually delay things more with the type of soldery / wirey things I usually carry. Via jorn . Link.

Great project on i-hacked.com. Using a simple laser pen pointer, a few misc parts, and about 15 minutes, you can make a simple laser communicator that converts a sound source into light that travels across a room, and back into sound with very little quality loss. Link.