I finally figured out where all the searches for “Scrabble keyboard” came from on my blog stats. I know the Maltron single-handed and stick keyboards resemble the tiles because of the dual letter/number keys, but somehow I don’t think that many people have even heard of the Maltron to be hearing that comparison enough to look it up.
Sure enough, there is a “real” Scrabble keyboard out there, and it’s not the Maltron. The real Scrabble keyboard is an actual do-it-yourself wooden keyboard, with wooden tiles over the key switches — you could indeed use Scrabble tiles. There is a writeup of it on Geekologie: Do It Yourself Wooden Keyboard Available.