There's a dude on eBay selling sets of lasercut wooden keytops that mimic old typewriter keys. I'm considering 'steampunking' a keyboard and this seemed a better option (and, for $5, far cheaper!) than destroying an old typewriter, so I bought a set. It's a complete set for modern keyboard, including the Windows key. The ones I picked up have legends, but I'm sure he could do a set without. With a coat of poly-stain and this keyboard you might have a nice looking piece of desktop furniture!