These are from one of many boards that Laila Nelson has. She's organized them into about 75 boards for every conceivable type (ie. Dresdens, wedges, moderns) and another 25 or so boards for quilting styles. And then, she has boards for other types of sewing. My favorite is her "Quilt Studio Ideas" but her organizational system is unreal!
The boards that are curated by Thorine are eclectic and somewhat well organized. Quilt boards are divided into color, theme, color combination and other subcategories. However, they are mixed in with other boards which makes figuring out the system more difficult and, for me at least, more distracting. One of my favorites is a board on fabric folding. Here are a few pins from that board.
Enci Toth has an interesting Pinterest site. She's from Hungary, so I can't read any of the board titles, but they are easy enough to figure out, thanks to the photos. A board titled, "Varrós ötletek" translated to "various ideas" on Google translator.
Another board is dedicated to quilting designs. I'll be back here for ideas!