The small "Mason-type CANDLE" jars are what I use after I have finished the CANDLE to sort my buttons by color. I have them lined up on one shelf and they look so pretty. Nice touch is that even after washing the jars, they still have a faint "special smell."
This summer at a church sale, I found an old round jar that sits on its lid" to use for buttons but I am out of buttons. So now I have one empty round glass container waiting for buttons.