For those of you who are both creepy and crafty, a website specializing in Halloween prop projects and related antics has documented how they created a set of severed, twitching legs. There's even a video of the finished product in action. It's how a pair of pants can scare the pants off of partygoers.
Kasey McMahon decided to combine an interest in taxidermy with her PC. Fearing that the natural world is being replaced by technology, the artist installed a working computer inside of an idle beaver. First, she crafted a computer from the motherboard up, tested it, then hollowed out a stuffed beaver and molded the two together using spandex spray, resin, and fiberglass. After three months of work, the result was Compubeaver, followed up by its accessory, Text-o-Possum, a stuffed possum that's equipped with a laser in its back leg that projects a virtual keyboard. McMahon was generous enough to provide a 29-step guide for the rest of us, in the hope that we'll each case mod a beaver and create our own animal-based data processor. Just imagine using a raccoon laptop at Starbucks. Perhaps that would inspire them to provide free WiFi.
Update: See also installing Linux on a dead badger. (thx, michael)
An interesting way to hold onto summer would be to engineer a lunchbox that comes with its own outdoor setting. For those who are craftily inclined, this article contains instructions on how to pack more than a sandwich with your mid-day snack, using turf, an image of the outdoors, and some old fashioned ingenuity. With lunch inside the box, nestled among a handmade diorama of the outdoors, complete with a patch of grass, the "Green Space Travel Case" provides a tiny slice of countryside for those confined to a concrete cityscape. Ants and screaming children packed separately.