Yes, it was strange to type that title, but thanks to Shapeways, which allows you to create your own jewelry, ringpoems, and other fun stuff using a 3D printer, you can in fact create your own custom cufflinks (with your initials on them), in silver. Or a ringpoem, a ring of silver made of the words of your favorite poem. The links are only $99, the ringpoem (makes a handy napkin ring) $129.
Want to start your own 3D scanning studio, and get any shape you want printed in 3D (including a monkey statue, as used in the demo)? Then you'll want to check out the DAVID 3D Starter Kit, reviewed on the Shapeways blog. For less than $300, you can start scanning stuff at home and turning it into 3D digital models. Monkey not included.