Small and cheap quick release system?

I am looking for a very small quick release system to put on my Zipshot tripod so low weight is of the essence. It will only have to carry a compact camera like the Sigma DP1 or lighter. It does need to have spirit level, markings for panorama or anything fancy. Just provide a way to attach and detach the camera swiftly (and securely).

Anybody got something they can recommend?

Thanks in advance,
Xpanded