There are Kerr and Ball canning jars with zinc lids catching the light on shelves by the window. They are better than old tin cans as I can see what is inside them when projects strike my fancy. Several of them are filled with ocean smoothed basalt ovals and circles that I picked up for art projects decades ago. I used them in painting shapes for visualization in some of my magical lessons, some were for Rune sets, some for Enochian letters from an edition of John Dee’s magical works, some from sigils taken from a knock off copy of the Necronomicon, etc.
If you ever have seen beach glass shaped by the wave and tidal motions at the shore, you know that sand smooths most things through time. I learned that different distances from top to bottom where the waves fall shape similar objects into similar forms and sizes. I could gather whole Rune sets like I was pulling balls of cotton from a bag. They had only minor variations.
They were on my table at flea markets for years, but my attendance of flea markets became less and less, and if they ever come again, I needed to upgrade to something beyond the magical student or person in need of a charm or talisman. Not many of my sidelines ever do very well, that is why there are so many of them. The modern world has refrigerator magnets. Rock and magnet make a teaching tool for a kitchen while anybody can be pulling things out to make a sandwich.
They can go on the side of some old metal footlockers I have for display at camp sites when I am out looking for treasure, or spy a flea market, or other stop for a roadside attraction when I am on future journeys.