Thanks for the feedback, everyone.

I've added the Fey Stuff (items, feats,spells etc) section - including the Giant's feats, of course - and corrected the Wendigo entry. I'm now checking your suggestions, and... how on earth did I miss Bhu? This will take some time.

As for third party sources, I don't mind including them, the problem is I don't have any. If someone can come up with a list, I'll add it, otherwise I'm afraid I can't include them.