In your own space, post a rec for fannish and/or creative resources and spaces. Tell us where you go to dig up canon facts for your fandom, or where you get all the juicy details about your favorite ship. Where do you like to hang out and squee like a squeeing thing?
This is one I really like though I don't have that many fandom squeeing places as I used to. Tumblr is a main one of mine for the newer fandoms I follow. Most of my resources are RP related when I have a moment of wait, whats' that detail.
The Vorkosigan Wiki which is helpful for when I'm writing for something for Ivan and get stuck.
The L Space Wiki for Discworld.
Library of Congress for all of its amazing resources about how things looked and connections to the past. I do fact checking as a part time job and for historical images, this is probably my best resource with Getty Images as my next choice.
My undergrad and some of my grad work was in Classics and one of my favorite resources for trying to figure out Gods' family trees is Theoi. I appreciate how it quotes the sources which is useful for those times when you go, not using that part.