Do you like to make garb? Guess what? You can search by "Collection/Department" and hit up The Costume Institute. Send the fighters over to the books on the Arms and Armor collection. I've been giggling like a maniac by just typing "Jewelry" into the Keyword box so I can Download All The Things.
So please, tell your friends, tell that cousin who loves to paint, that friend who's really into cosplay, and send them to MOMA's Met Publications Page. There's literally something for everyone. If you only want to look for free downloads, make sure you select Download PDF under "Format" when you begin your search. Once you find a book you'd like, hit "More" and it'll take you to that book's page, where you can select what options they have available for that particular title. The screencap up top gives you an idea.
So, what are YOU looking for? Have you found a great resource? Share it in the comments so we can all see it!