Southern Egyptian Sandstone is by far the easiest to take care of. Once you get more experience, try moving up to Iraqi sandstone and after that, try North American Sandstone. If you can tame the sandstones, you can tame anything
Dwayne Johnson
Kidney stone. It’s organic and home grown.
If you want to make one yourself instead of having to find one, I recommend looking into a dorodango.
Have you considered adopting a gravestone?