Those do look handy!
Its just whatever is there. I rely on the vise and anvil a lot but there are various tubing slices, angle, plate, and what not in the danger zone there under my bench. Then theres the trusty frame rack and even a hunk of railroad in a corner. I have been known to use old wheels even.
While you are milling about the punch bowl telling jokes and spinning yarns, Brian
I was wanting you and the guys to take a look at this. It does not cover all the bases but its the look I need to be sure about. This kind of outlines the execution plot-