If you're in a neighborhood where looks won't get you in trouble, a cheap, lightweight, and simple composter I use is to take about 10' length of 3' wire fencing, 16 gauge with 3" or 4" grid, line it with ground fabric held in place by duck tape. At one of the wire I bend a lot of the horizontal wires into little hooks, which can latch the other end of the wire into a 3' diameter cylinder. When lined with the fabric, you can fill it up with leaves and grass and what have you. I use a stick down the middle to open up a sort of 'chimney' and when I can obtain it, I use an old wooden pallet to allow air infiltration from the bottom. Together with the amount of air which can enter through the fabric sides, you've got a nice lightweight unit which allows air to get in, but is somewhat windproof. Usually within 24 hours I've got a column of warm water vapor exiting out the center.
To turn it, you simply unlatch the wire ends, pull the whole thing off, put it down empty next to the pile, and pitch everything back into it. It's still work, but reduced to its simplest elements IMHO. If I really want to do a good cooking job I add fresh grass to the mixture, and in four hours after turning it's hot again.