Just saw this a day ago. George Rhoads, who did origami in the 60's (to my knowledge) and did some cool dollar origami as well has passed away.
Apparently he was also a sculptor of machines where balls would roll and drop through intricate constructions of rails, coils and pendulums. These were often found in museums, hospitals, and airports. https://www.washingtonpost.com/local/obituaries/george-rhoads-dead/2021/07/31/d1ce4148-f16a-11eb-bf80-e3877d9c5f06_story.html Andrew
