Float tanks rock! Note to newbies; you need about 3 sessions to really get into it and learn to let go faster.

Forget sitting meditation. Flotation therapy is the easiest way to get a brain and body massage. There are also heath benefits from the Epsom Salt used inside the tank to make you float.

I wrote a bit on this topic few years back here: http://www.theroadtosiliconvalley.com/local-california/float... and why it's a perfect tool for engineers to let go and relax after a busy day of coding ;-)