There were canning jars at a yard sale I was at, this morning. Everything was really cheap, even by yard sale standards* — maybe I should have nabbed them. But, storage space is already a big problem for us... :-(
*I nabbed a compact 1500 watt oil filled heater in great shape; about $50 (at least!) worth of extension cords, a trouble light / extension, and rope, also in good shape; a smaller heater fan in good shape (does need to be cleaned); 5 large storage totes in good shape (will help with storage a bit?); 2x dual compartment 1/4” clear acrylic (or possibly Lexan - not sure) storage units that will make great dual nest boxes (might have to spray paint the outsides - not sure hens will like “no privacy”); and a few misc. small items... all for $11...
Wow..... I’m surprised they still had the canning jars with as scarce as they are.
I have found two boxes of canning jars by the side of the road on the street we live on. One of the neighbors is cleaning out, I guess. I grabbed them both times and cleaned them up.
Aside from canning, I use them for storing stuff like pasta, rice, spices, nuts, etc. They are very mouse and insect proof with the lids on, although the downside is, glass breaks and if you drop it and the jar breaks, you just have to throw everything out. You can’t take the risk of ingesting shards of broken glass.