A glass-and-pottery studio in the Ozark hills east of Fayetteville, running since 1975 — the shop that made the Bluebird of Happiness, more than eight million of them, then kept getting stranger. Drive out for the six acres 200-plus artists filled with trolls, a labyrinth, a castle and a wizard's cave, free to wander Wednesday through Sunday. Bring a dollar for the donation box, and a kid if you've got one.