Trisham:
I have been experimenting with composting in pots too. We have a basement kitchen for processing foods. Right outside the door we had a garden plot of clay soil which is too shaded to grow any herbs.
So I dug up spaces and set several garden pots into the ground about 1/2 way up the pot. The area is also inside a fenced of play yard. I put bones in one pot. Banana Skins in one pot, and egg shells in a pot during the fall and winter.
Cover with some of the clay dirt. Then next spring, I use these as needed as additives to my main compost in the garden. For example I like to add the egg shells to my Tomato or watermelon garden plot.
Any bones not totally decomposed are just added back to the pot and covered up again. So far so good. It seems to work, and saves a long trek everyday to the compost pile.
How big are your pots, greeneyes? I have to say that I find your composting solution to be both inventive and appealing.