Imagine a vending machine or whatever that let you just drop the 7 keys and leave them on the doorstep.
Let's say both you and the bag jar have two keys and the door needs three.
A vending machine like that would be interesting, though you didn't really explain the bag jar. Also, why are you responding to my topic with this?
Noted, I suppose because I'm not really prepared for a full-blown topic of my own. Though I have a better idea than a jar now, maybe I can do so...
