Recycled Transit Token Cuff Links
“These transit tokens from New York were discontinued in 1980 and have now been recycled into cuff links, courtesy of their designer Ward Wallau. He spent 11 years petitioning the NY Transit Authority before they finally gave him permission to use them in his jewelry, making them truly special. These unique cuff links are also available with recycled transit tokens from Boston, D.C., San Francisco and Chicago.” These might be fun to make, perhaps out of arcade tokens… Link.
If you have some old CPUs laying around, you can turn them in to great geeky keychains, perfect for holiday gifts. The process is pretty simple, drill a hole, get a keyring and that’s about it. 
John writes “Stereo From the Air – I just finished a short tutorial on how to take 3D stereo photographs from on board of an airplane and thought I’d share it with you guys. It’s a fun little project for when you’re pretty much bored out of your skull and stuck in a tiny seat at 33,000 feet.” 
The “Spiral Rainbow Island” created by Richie Sowa is an island is anchored off the coast of Mexico, close to Cancun. The island is made from over 250,000 recycled plastic bottles, packed into netting. 