I just made a couple 12" Babas for my 17mo & his cousin. Except my 4yo hijacked his brothers, and so now I get to make another. They are so ridiculously easy. The pattern is from Magic Cabin (it's like $5), and just a FYI - the cheapest Waldorf materials I've ever found are from Nova Naturals. If anyone's got a cheaper source, let me know.
I made 4yo DS a standard Waldorf doll (9", I think?). And it took me, like, a week! Then I made the Baba in a couple hours and he loves it more!