When you're vacationing on a beach, nothing beats an underwater camera; but watertight cases are pricey and disposables have lousy quality. Lucky for you, the editors of PopSci have come up with an easy workaround using something there's probably already plenty of in your suitcase (hint: not socks). That's right, thanks to the magic of unlubricated condoms, you too can transform your point-and-shoot into an waterproof wonder. The set-up is easy enough, but as John and Doug demonstrate, it really does help to have a partner lend a hand.

You never know when the level of festiveness in your home might suddenly become critically, even dangerously low. Thankfully, one vigilant soul has put such concerns to rest by creating the Emergency Party Button, a DIY system that with one press transforms a seemingly ordinary apartment into something resembling Rick James’s rumpus room.

We're back from this weekend's Maker Faire, the third-annual event in San Mateo, CA . Our friends at Make continue to up the ante, bringing DIYers from far and wide to show off their projects at the ultimate geek county fair.

Australian artist Chris Poole was driving around his native Perth recently, when some curbside garbage caught his eye. Unlike the average scavenger, Poole wasn’t searching for couches or chairs. He had his eye on an old slide viewer—a key component for his next project, a laser-based projector that could display family photos (albeit with a green hue) to the entire town.

All of you SAW III aficionados take note (and quickly, before something bad happens): entombed within this embodiment of evil is a small digital voice recorder just ripe for the hacking. And the price is right, too.

SparkFun Electronics is showcasing a recent class project from Alex Dow at the University of Colorado. Derived from a box full of SparkFun widgets, Mr. Dow was able to concoct a digitally controlled Etch-a-Sketch.