3DPrint Game Card Stand
Card stands like these seem hard to buy if you want a certain size or shape or color. Mostly there seems to only be one style available at a reasonable price at any one time. So I just made one I could print and tweak :)
This has a V shaped crevice the bottom part of which clamps and holds onto playing cards. You might need to tweak this blend file as I just did it by trial and error with the minimum distance apart I could get away with printing before it stuck together and that took a fair few tries.
It should print OK without any supports and in batches as it is laying on its side with each layer exactly the same.
I've included a gcode as how its sliced is pretty important for the grip and fit. This works with my default ender 3 pro and generic PLA.