In my case, it depends on the situation, but I tend to print out and put it on the wall if it's a good idea, or if it's a good formative work that can be used as a reference point, or if it's an inspirational task that can be applied someday.
Not to this extent, but I create a document in a service called Reference Face Notion that I can refer to whenever I need it and write down the representative image capture and the link at the same time.
I make a reference folder that's related to the project that I'm working on, and I'm going to collect the images, or I'm going to come out in the next chapter, and I'm going to make a moodboard, or I'm going to put it in the notes.
For sites, we create favorite folders and store them in portfolio sites, design resource sites, design agency sites, and so on~!