What are your favorite add-ons for Firefox?

I use:

• uBlock origin (of course) (also on my phone)
• Web archives (also on my phone)
• ClearURLs (also on my phone)
• Consent-O-Matic
• Bitwarden
• Search by image
• Enhancer for YouTube™
• SponsorBlock
• Return YouTube Dislike
• Augmented Steam
• Dark reader
• Tree Style Tab
• Feedbro
• User-Agent Switcher and Manager
• Disable WebRTC

And probably a few more I don't remember.