So when I got home from work, I dug through my stash. I found some Paton's Classic Merino Wool that I picked up on sale at Joann's (one of their lovely 30% off dealies). The rosewood heather pink was just too blah a pink for my taste when I got it home, but there's a fair amount on a skein, and I think it's a good wool to be using for this. Plus, well, it's very soft merino wool. Nice stuff for a very reasonable price. OK, so I'd still prefer Malabrigo, but this stuff is pretty damn good for about half the price. :)
If anyone on my F-list is interested in the charity, the link is http://www.knit-a-square.com/knitting-for-charity.html