Hyperboloid
A ruled surface
moc
Pin Tumbler Lock
A working lock
Sparky
The Google Firebase mascot
Bascule Bridge
Joseph Strauss’s other SF bridge
Little Library
A Little Free Library made (mostly) of DUPLO
Salginatobel Bridge
Robert Maillart’s iconic bridge
Craftsman House
A 1908 Craftsman style house
Smoke Grinder
Aka Trammel of Archimedes, aka do nothing machine