Personal finance analogy is probably incorrect. My guess is a better analogy is notebook/journal/scrapbook.
Think of all of these items as short/medium term working memory. Rather than looking at the items as intrinsically valuable, think about the outcome as intrinsically valuable and the items as vehicles to get some job done.
Perhaps you have some goal, such as learning to play piano, getting promoted to lead engineer, starting your own company. If that's the case, if there's important material you discover, take as many notes as you need (which could be nothing) as you work through the as much of the material as you need (which could be very little) and go from there.
In and of itself, storing likes, bookmarks, papers, movies, photos, files, etc is just hoarding. And in fact, it's a form of procrastination that feels like a great substitute for doing the actual thing you are trying to get done.
Let go of all that "helpful" content and you are thrust in front of the giant, scary, empty space of what is between you and your goal. Sit with that space, let it wash over you, and you won't need any of the other junk anymore.