There are granite chips you can use but I cannot recall the name -perhaps it is ‘decomposed granite’ – not sure. Anyway, this stuff, when packed down with a roller, gets really packed in tight and is a really nice surface. However, it might be suitable for a slope nor for parking on.
I have blue stone slabs in my backyard instead of concrete – the cost was less than concrete, and it looks a bazillion times better. You can get this installed from landscapers as well as stone/driveway firm.