I tried a potato bin this summer to good success (see my blog entries, with a photo, on this www.cvog.blogspot.com
) Voles had been eating my potatoes, so I dug a trench, lined with with garden cloth (it has another name, hardware cloth? It is fencing). I built up sides of garden cloth, lined with cardboard, and began to fill up the trench and planted potatoes. I did not "hill up" enough (as the plant emerge, continue to add soil to the bin to encourage formation of tubers along the growing stem) so my yield was modest- I will hill up next year!