I have no idea, probably a pallet with 10 bags of salt, maybe a log here and there. I have a hobby farm, just a city kid living rural because my wife has a horse (Have had 5 at once before, never again), had chickens, pigs, lots of dogs, cats. I am definitely looking for a separate attachment, not clamp on or anything like that. I will eventually also have a 3PH carryall. I am in no rush, as I have no need for them anytime soon. Most of my work will be moving dirt or rock and cutting grass.
This is where I was a few years ago, no idea what I was going to do with this tractor except for snow blow the driveway and it has ended up being the best investment ever. As far as lift capacity, remember that sometimes you only need to lift something a couple inches to get done what you need which allowed me to move a shed halfway across my property or when I used a 5:1 pulley system to rip some small trees out of the banks on my pond. These little BX's are quite versatile.
Not sure what these weigh exactly but I have lifted and moved to where needed
5 sheets of PT 3/4 plywood, 4 sheets of 3/8 CDX, and 7 sheets of 7/16 OSB, granted it was only maybe a few inches off the ground but that's all I needed to get it where I wanted, worse part was staying on flat ground so the 4x8 sheets didn't hit the ground, haha.