Originally Posted by teevee

It's a little sketchy when you get to items with a small number of specific uses, such as pickling lime, or large plastic barrels, but I think because these would have a first-degree connection to a tank, they could be posted (lime goes in the tank, the barrel is either plumbed to the tank or holds water for the tank). On the other hand, the table saw is, for instance, only associated with the stand the tank sits on, a second-degree relationship.