This weekend, I’ll be at the Midwest Crystal Fest, held outdoors at Emmenegger Park in Kirkwood, Mo., sharing a table with my good friend Sandy Schulz of Earth&Wheel Pottery. She makes amazing horsehair and pit-fired pottery, including runes, beads, and bowls. Of course, I’ll have my books there, too! Saturday 10 a.m. to 7 p.m., …