I usually have my log trailer when I go up to the woodlot, which has enough room in the tongue triangle to store what I need. (Only carry the spare tire on road trips.) Without the trailer, and just the winch, I have a 2" square-mount carryall from Craigslist. I added plywood sides and it holds what I need: 2 saws, wedges, fuel, oil, cant hook, chaps, helmet, axe, chains, etc. I rarely go to the woods without the winch, which has the 2" square mount receiver welded on.
I used to carry the saws on the winch - those rectangular chain slots in the 2nd. pic with a wood liner - but that put them too close to the ground and to the action end of the winch. The loader post racks seem like a good idea, just that I have a bit of a trip to get up to where I cut, and need lots of supplies.
Jim