I've started to use a custom bookmarklet for this. If I like something I read or watched, I 'pick' it with the bookmarklet, add my thoughts, and categorise it. The script then checks if it's on the Internet Archive, if not it tries to archive the site, and then save it to my public repo, which then my personal website shows under /library.

Repo link, if anyone is interested: https://github.com/karthikeyankc/picks