The K100 is a collapsible 2 ft x 4 ft table base and sawhorse that costs $50. They also make a 4 ft x 8 ft version for around $100. Here'a link and you can google Centipede Tool Co if you want video, etc.
I have been looking for a portable worktable for the shop - something that I can elevate a project to glue it up, stain it or just keep it up off the floor. I just don't have room for something permanent. Well, the orange BORG stopped selling the heavy duty 2 foot x 4 foot folding table I liked so much. But I saw this online today and realized the BORG sells it for the same as the best price I found online (at Toolnut.) I figured I'd try it and if it was cheap/flimsy, I was out the equivalent of a meal out with date.
Well, this thing actually works. No kidding - it seems strong and sturdy. I put a 2 ft x 4 ft piece of 1/2 " MDF on top. Then I put my butcher block base on top. The working height is good and there is no wiggle or give at all. It comes equipped with plastic clampy things to hold a tabletop or 2x4s in place. But I just dropped a couple home made 3/4" bench dogs through holes at the corners of my MDF to lock everything in place. I think you really could use it as a stand for a miter saw, as the company suggests! And it folds up into an easy to store bundle, much like some of the collapsible chairs you probably own.
Certainly worth the cost of a dinner.
Fred
Edit: Wow. The blue BORG has it for only $35. I shoulda checked first. It's a no-brainer at that price!