re: Zyliss Clamp.

I picked up one of these vises at a yard sale a few years ago basically still in its box and unused.  I used it a few times before I built a good  work bench for my shop.  I've kept it with the idea that it would be handy work holding when traveling or camping.  You could easily clamp it to a picnic table or even just a 2x4 clamped to something else.