It is funny that you mention this problem, as I have been trying to design an economical "wine closet". The concept is basically similar to an Armoir with a single shelf in the middle. The small size would hold5 6-gallon carboys and/or fermenting buckets. I would like the option of adding a small A/C - heat unit to keep the unit at a constant temperature. I was thinking about this more due to the constant comments on temperature control, but something like this would be most efficient for an apartment.
BTW, Joan, I am trying to put your money to good use in the store. It is greatly appreciated.