Are these the perfect tree decorations for green geeks? Possibly. Made from recycled CDs and circuit boards, they are heinously expensive (around $6 for a circuit-board dangler, $9 for the CD version. Or you can get a set of three for $16 or $21 respectively. Or you can not bother.

What do people who buy stuff like this put on the top of the tree, I wonder? [Nigel's Eco Store via Gadgets News]