Computer-controlled dance floor
“Comprising four 4 ft. x 8 ft. modules, the dance floor boasts 1,536 long-lasting and low-power-consuming LEDs that light to 4,096 different colors. Students are using substances as common as aluminum foil to achieve special effects. The dance floor, which makes use of one-half mile of environmentally friendly ribbon cable, can be controlled wirelessly by remote clients, thus facilitating visual interactions that were not possible in previous designs.” [via] Link.
Here are some great instructions on how to make your very own water rocket launcher along with how to modify a pencam. This will allow you to record in-flight movies of your rockets. [
Excellent project – “This is the first in a series of articles that will provide step-by-step instructions for implementing Bluetooth Proximity Detection. We’re going to focus on using it with Asterisk@Home. But your imagination is really the only limitation. At the very least, when we’re finished, you’ll be able to walk out of your home or office carrying your bluetooth phone or headset and have your Asterisk server automatically transfer your incoming calls to your cellphone.” 
RPS writes “Low tech how-to on making sound insulating earphones for listening to music while drumming, operating machinery (or doing anything else in a loud enviro) using cheap ear protectors and headphones.” 
MAKE Flickr photo pool member Pete Hidle posted up his amazing Etch-a-Sketch turntable project, he writes “Dualing Etch-a-sketch makes music by taking information from the Etch-a-sketch dials and translating it into digital information. That information could be used for anything, but in this example it turns it into techno music, using the Max/MSP software from 
More soap box derby action – “A lot has changed since the first Soap Box Derby in 1934. More girls are racing, wind-tunnel technology and computer modeling are the norm, and the cars are made mainly of plastic from easy-to-build kits…Over the last decade, Soap Box Derby racing has come barreling back thanks to a blend of tenacity, adaptation, renewed interest from national sponsors – including Nascar – and a yearning for nostalgia.” [