So, this is actually meant to be a resource of things I mention and like.
First, there is Permies.com:
While I am not an enormous fan of formus (in general) this is a boundless resource for "making the world better by learning about cool stuff instead of being mad at people."
A major supplier of mine:
if you are lucky enough to live near one, as we do in Milwaukee, by all means check it out in person. If not, their recipes alone make the site worth a visit.