I tend to make up small batches and seal/finish them. Using your pot call example, I make up a few pots (wood part only) in both 3 inch and 3.5 inch, seal with Watco Teak Oil and put them away in my wood drying/storage cabinet. I then make the calls (add tone board and striker surface) as orders require or as I want to build another.
Lots of guys that make a lot of calls use a drying rack. Sorry I don't have any pictures but remember some were posted in the past.
Welcome to the Forum!
Fred