I happened to see some gallon glass jars at a pizzia joint a bit back so asked what they do with them. They said throw them out in the trash. I asked if it would be a problem to call me when they get a couple and I would take them.
They not only call me but also wash them and remove most of the labels from them I now have 12. One of the young girls that works there knew about feeding bees in the spring and fall and askes me about mine when ever I am in to get jars or a pizzia. I now need to give each a bit of honey as payment for being so nice.
On the use of the jars, I take a small scrap of board cut a hole the size of the jar mouth to help support the jar over the intercover hole. You need a deep or 2 supers to place above the intercover to place the jar inside of. Also a deep is just barely even with the top of the jar so the outer cover needs to rest on one edge of the deep.