If you haven't already, perhaps post a 'free assets' list on gamedev.tv.
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+1; I think it was Darren (OboShape) who recently mentioned on the forums that the new site's knowledgebase isn't completely fleshed out yet. I'd love to see a page on there dedicated to free asset sources like these. That's the sort of thing that deserves even more than a forum sticky imo, but any reference to it would be good.