The most convenient userscript for me is this one that automatically likes YouTube videos. It’s configurable to be able to: like the video after a specified watch percentage, ignore already disliked videos, only like videos from subscribed channels, and ignore livestreams. I like it enough that I’ve made a few pull requests to fix it when YouTube changes their UI.
When I have the time, I work on an in-progress local version to implement a few new features including: (1) Support for the YouTube shorts UI. (2) An option for a notification/toast to appear when the video has been liked. (3) An option to check the watch percentage continuously (mutation observer) instead of a user-defined poll rate which sometimes misses liking very short videos in playlists. Eventually I’d like to port something like this as a YouTube ReVanced patch.
If you play on PC, you can use a hotfix injector to mod the cost of gold, diamond, and skeleton chests to be free.
Borderlands 3 Gold Chest
Borderlands 3 Diamond Chest
Wonderlands Skeleton Chest
There’s lots of quality-of-life patches and other fixes available too for both Borderlands 3 and Wonderlands.