Computers (oh dear)
Rubik: a NeXT Cube, with NeXTDimension colour video in/out board.
Notes: Tim Berners-Lee wrote the first World-Wide Web browser on a NeXT cube. A picture of TB-L's NeXT Cube.
Newsflash! Tim Berners-Lee signed my NeXT Cube when he visited the OII. Photos here, here and here.
Graphite: a NeXTStation ("Slab")
Thanks to John Ball for the icon of the signed Cube at the top of this page!