We have an old fridge in the shop. We store livestock/pet medicines in it. After a few decades it looks like a mini drug store. Most of those type items are in a bottle or sealed container of some type so no mold. In the freezer compartment we store seed harvested in the fall for the next year, fairly temperature stable. Also keeps mice out.
A couple years ago I bought a new fridge. The delivery people took the old one away for $20, didn't need the storage.