I found a supplier of EL tape that can provide 18" x 3" strips (in white) for about $9.50 each. That also comes with a 12V DC inverter.
I'm 6ft tall, and I estimate I'd need at least 16 of those strips to have a complete set (2 per arm - front/back, 2 for the chest, 2 for my back, 4 for each...