An item that you buy a lot of but don't need for up to a week is practically made to be put away in storage—I agree with everyone confused and frustrated.
For now I have it on top of a cardboard box in my office / crafting room. It's just one though, and I'm not sure what I'll do next week when I get more. Maybe I'll have a root cellar by then...
What happens if you leave them outside?
nowhere cause I don't get them I make more bells from fishing and bug catching