Well.. I was discussing it with a fellow craftsperson yesterday that it would be nice to have a very small storage ability to all craft buildings. These storage areas would be capable of only holding small amounts of raw/first refined resources. IE A woodshop would be capable of only holding logs and boards.

All shops have a sort of remnants pile.. small amounts of product that you didn't quite have enough of last time to finish the products you were making. So perhaps if you were making yew crossbows, and you had say 3 boards left over, you could store them in the craft shop itself instead of carting it all over the place.

I would propose that the # of stacks would be no more then around 6 and the max bulk would be in the neighborhood of 200-500. That would allow enough space for remnants of a small set of items that you might be working with, but not so much storage that it would replace a tent, t1 house, silo or the like.