Though Richard "Datamancer" Nagy died unexpectedly in 2013, his business partner and family continue to fabricate the extraordinary steampunk designs he pioneered.
Among the creations still available is his classic Sojourner keyboard, machined from brass and elegantly designed. I own one like this (bought from Richard himself around 2008) and wrote two novels on it — For the Win and Rapture of the Nerds — and it's a delight to write upon.
There are other Datamancer keyboards for sale, along with keycaps (if you fancy trying your hand at building your own).