If you're short on space, you can use a plastic garbage can. Remove the bottom, and set it on top of the soil. Inside, layer the materials as with the larger composting bin and then put the top on. In a week, lift up the garbage can. The compost will fall out. Take the can to a new location and put the old compost back in the can. In a few weeks, you will have rich humus from composting.
B. Vogel, D. Spikol, A. Kurti, and M. Milrad. Proceedings of the 2010 6th IEEE International Conference on Wireless, Mobile, and Ubiquitous Technologies in Education, page 65--72. Washington, DC, USA, IEEE Computer Society, (2010)