Wally World sells/used to sell a small folding seat for fishing. It was pretty close to the ground, the fabric was an interwoven canvas, and the legs were such that you could sit it on a bank and still sit flat. It's great when you're sitting on a hillside, and when you're not, I just turn it around and it works fine that way too. Also, it comes with a shoulder strap so you don't have to lug it around.