Not sure why this hasn't come up before. I picked up a few nice, wooden picture stands which work perfectly for a slate Tablet PC. You can get these at any homeware department store, from cheap ones at Wal-Mart or Target to more expensive ones at Pottery Barn. The one pictured here is a cheapie from Target, but it looks great on my desk, and works better than the plastic stand sent with my Motion M1300.
All I had to do is add some tape to the back to keep the stand from folding in on itself when you "dock" the Tablet. (Which is a problem with the Motion default stand, too!)
Here it is with tape on the back:
Front view, no tablet:
And with tablet:
Not bad for nine bucks, eh?? Try it out.
(For you REALLY curious types, that's a Sprint PCS internet card sticking out of the PCMCIA, and desktop wallpaper from www.wincustomize.com.)