Mate, it's something that you would find lying around the kitchen!

One of my mates rocked up with it the morning of the beach ride with him, he pinched a nylon chopping board from his missus' kitchen & cut it up into pieces for each of us to use on the beach.

Lucky he did otherwise we'd have to hold each others bikes up to take a leak or a photo. I thought that my centrestand would do the trick but it didn't. The bike would sink into the sand take a lot of effort to move :-(

Some blokes cut the top off a beer can and bash the aluminium sides against the kickstand to increase the surface area on the sand. This solution worked well as we'd just chuck them in the mesh part of the tank bags when underway.

Mate alerted me to this link today, you've probably seen it:

http://www.youtube.com/watch?v=CWLlDIzi8SU