Sawbucks - the unglamorous underdog of the firewood making pastime.
I've got one that I built on a pallet. I nailed some short stakes onto the side of it that fit the stake pockets on my little ATV trailer, so I can put it on the trailer & it stays put. I run around with it & gather up the small stuff (small = what I can lift without getting into hernia territory) in long lengths (8-10'), then drive it to my splitting/stacking area & cut to length right on the trailer with my 360. Takes about 5 minutes to cut it all up, and about 4-5 loads to make a cord.
Have another walking beam trailer, for rough areas, that I do the same sorta thing with - poles for stakes, then couple long lengths down lengthwise, then three shorter pieces cross wise, then the load on lengthwise. Gets the wood off the deck of the trailer so I can cut to length on it too without getting the saw into the trailer.
Huge time saver.