I got quite lucky at Goodwill! I found a little glass box full of uranium glass marbles! 30 of them in there, all for 99 cents! : r/uraniumglass
Matthews Air trap marbles
Uranium Containing Marble (ca. 1960s) | Museum of Radiation and Radioactivity
Radioactive Uranium Marbles
Louisville Fossils and Beyond: Fluorescent Uranium Glass Marbles
Uranium Marbles - Etsy UK
Uranium glass marbles. | By Anything And Everything Vintage Boutique | Facebook
Received some marbles as a gift. They seem a little darker than normal uranium glass but still fluoresce. The larger darker red marbles fluoresce too although it's hard to see in the