Organizing my iPhone's photo library. It's mostly memes & inspirational quotes, and a bit of art I have gathered, plus some personal stuff. There are also many screenshots of interesting stuff I discovered when scrolling. Cherry picking and organizing all that takes a lot of time, but I do it anyway since I don't know of any software that could automate it.
I have the same problem. To stop procrastinating I usually sign out of YouTube on my iPhone. This doesn't allow me to save vides to watch later in the app. So I end up taking screenshots to watch back later. My Photo library is filled with hundreds of these screenshots.
Cleaning hair out of the bath tub drain. One of the many ancillary costs to keeping long hair.