Ryan,
Preschool? Cool! I have one that is in preschool. She grows like a weed.
Actually that S900 would be great! Your right, there are a bunch of games and estorybooks that would run on that clone. My daughter used a Performa 6360 (603e@160 MHz) for the longest time before I upgraded the livingroom computer to a beige G3 (others were finally complaining about the speed of the Performa). Now my daughter runs all her games in Classic and I even bought one game recently that is her first OS X native preschool through kindergarten game.
Funny, even kind of sad, how a computer that once was the latest and greatest can depreciate. If your boss has everything for the S900, includes keyboard, mouse and monitor, considering shipping to be roughly $30 from someone off of eBay, maybe you can offer him $50. Free still would be nice thou. I just ran a search on eBay for Umax S900 and came up with a couple, one was buyitnow for $25, no one bidded yet.