This is what I keep using, http://www.vicious1.com/table/, but it is far form “ideal”. I Think I will end up welding together as a removable leg type base for this. I do like the 2×4 wood top and once it is built (to keep it square I build the top as one piece), I cut it so I can replace the center section easily.
It would be nice to have wheels, or removable legs. There are some smaller gorrila racks at my local hardware store for $40 that would make a great base for these. Or if you want to spend a little extra there are the flat top rolling toolboxes with 1-2 drawers and a tool storage area.
I am always looking for a better solution, but 2×4’s are so cheap and easy to work with it is hard to beat.