I love burning scented candles during the winter time so would pick some up every time I went to Walmart for groceries. I like the ones with the flat tops all made from glass. Cleaned them up from the leftover wax, pulled off the label and made a label stating which color(s) for each jar. Because of the flat tops I can stack them but I don't. I have a shelf above my sewing machine that houses my TV/DVD which I never play so have them going across so I can see each jar filled with the buttons.