I'll be doing a demo at 11am on Saturday at Maker Faire on embroidering a circuit with conductive thread, LEDs, and a watch battery. Don't worry if you've never picked up a needle and thread before; this beginner's level demo will show you the basics of embroidery and circuits. I'm very excited to see you all there!
http://blog.makezine.com/archive/2008/04/soft_circuit_embroidery_d.html