My current obsession is the roto-sphere and I can’t stop looking at pictures of it. This Flickr photoset includes some images of roto-spheres as well as the original brochures that Warren Milks used to sell roto-spheres to various companies back in the 60′s and 70′s.
We have a Roto-Sphere here in Gunnison, Colorado, at the Long Holiday Motel. The owner has told me it still rotates if you flip on the switch, but the neon is quite broken, and the mechanisms haven’t been serviced in a long time. I got the bright (**) idea that it would be fun to get it restored, and have received permission to do so. I’d be glad to put you in the loop on future progress, just send me your email address!