The words "house guest" usually conjure up feelings of privacy being invaded, coffee cups being left on the table, and the bathroom being unavailable when you need it most. That's why they make inns, and bed and breakfasts, and hotels.
There are so many uses for jars. I actually buy food and beverages for the jars that they come packaged in. Like, I'll buy a glass bottle of apple juice instead of a plastic bottle of apple juice just so that I can have the glass bottle.