/r/LoadingIcons: LoadingIcons - Looping gifs and videos that are used as a waiting page for content. - December 2, 2022 - 14:00
/r/perfectloops: perfectL∞ps - A collection of Perfectly Looped animated .gifs and html5 videos. - December 2, 2022 - 13:08
/r/loadingicon: Interesting simple .gifs - 'That should be a loading icon!' - December 2, 2022 - 13:08