I found a QR seatpost bolt for $1.15 on evilbay with free shipping.
I agree with Carlos that although nice, that's a bunch of exposed and charged metal, just waiting for something to touch to a ground.
@Carlos G : don't your jumper cables have a permanent quick connect? I have a set of connectors that I've been meaning to install for about 5 years now. I never get around to it....