Is anyone aware of a source for square playing cards? Preferably on the small side, too, but at this point I’d be interested in any leads on something like this existing. My interest is for a project, not necessarily to play with. But really, I’m surprised at the seeming lack of these existing, so now I’m just very curious. I found one or two sites that seem to advertise square cards as an option for custom backs, but none seem to be active. The attached photo is from one of those sites and shows what I’m looking for.