While cleaning out our garage a few months ago, I found the old manual typewriter I'd used back when I was in college ('72-'76, then thru '78 - Yeah, I'm that old. ;). I took it to school for the kids to play on it, and it was like they had discovered a fantastic new toy. In fact, I had to put a time limit on how long each child could remain on it so the others wouldn't get upset!
Talk about a great way for them to work on their fine motor skills!