At the Scottsdale Museum of Contemporary Art (SMoCA), a "chair" with a rounded bottom. Designed by Thomas Heatherwick. Pretty stable for not setting fixed-and-flat on the floor. It was actually pretty decent physical therapy for a lower back ache. :)
Retired economics professor (“dismal scientist”). Married 40+ years to the love of my life; we have two grown daughters, both married, two granddaughters and a...