Later on, convert it into a manure/compost spreader. I've got axles and metal frame from an old mobile home I could use to put a frame, wheels and a hitch on the box. For now, it has that hatch on the bottom of the end and I could fork the compost out. You couldn't even buy the metal to make one for $200. I don't have any sides on my trailer and even the materials to build some would be more than $200. Lot of work too since I'd want them removable. Hard to go get compost with a flat bed trailer and I can only get a yard or so in the bed of my pickup. Did that once with pickup truck only and gas cost almost as much as the yard of compost.

This same person sells a lot of stuff and has a few more things I'd like. One thing is a four foot wide belly mower for $50 that I could put on my little tractor. I'd have to set up a lift mechanism and run a belt with 90 degree turn to go on the engine. I have an extra set of belt pulleys for the 90 turn off an old Sears Suburban garden tractor.

He's also got an umbrella for a tractor for $50 and a leaf shredder that would probably need a new horizontal shaft small engine for $160 but I'd have to get the shredder cheaper than that. It's belt run which is cool. I hate things that are built integral(I'm talking to you generator makers). Might have to work a package deal for all.
Got my paystub in the email for tomorrow's check and it has my $500 sign on bonus on it. He's had the mower deck forever and is apt to have everything still in a month but I'd hate to miss out on some good deals on things I need(or at least want).
The first picture is indeed the tub off a a grain wagon. Hauled many of them full of grain to the local elevator in my yute.
Beau would be in that yard all day, dickering and making deals, LOL!