The ternary calculating machine of Thomas Fowler. And electromechanical calculating machines from the 1960s.
It is quite likely this is the coolest desk in the world! (Well, even if that's hyperbole, there are lots of other beautiful puzzles and woodworks in Kagen Schaefer's gallery, including some of his award winners from the annual Nob Yoshigahara Puzzle Design Competition.)
Bikes: Steel? Aluminum? Carbon Fiber? Wood, and nothing but wood.