Speaking of ancient old code. You used to be able to drop a box in the pool outside Cavernhold, and have items from the box returned to you as you walked away.
As far as I recall, only Thuunk and one other ever used it, and (?) GM Tigermist (?) fixed it. Thuunk would use it for the tough boxes that he could not open.
At the same time this was fixed, Cavernhold lost many of its hiding places.
Thuunk <--- Historian of Cavernhold (and some other places)