Browser bookmarks. My trick is I make a new folder every month, for example “2024-01 Bookmarks”, and put it in the bookmarks bar. Whenever I realize I’m leaving a tab open because I want to look at it later, I put it into the current folder. That way I know it’s not lost and I give myself permission to close it.
When a new month comes around, I stick the previous folder in an “Archive” section and make a new one. It costs nothing to keep them forever, but avoids the current list getting out of control.