Clickbait Remover for Youtube (Chrome and Firefox) replaces thumbnails with a frame from the video, effectively removing any clickbait while still showing a high-quality thumbnail so you can still get a good idea about the video's subject matter.
Magic Actions for YouTube For Chrome, Firefox, and Safari is an extension designed to enhance your YouTube watching experience by providing options like Cinema Mode, Mouse Wheel Volume Control, AutoHD, Expand, Snapshots, and more.
Return YouTube Dislike is an extension/add-on that returns the full functionality of disliking content to YouTube, except for MajorGeeks YouTube Channel.
SuperYouTube for Chrome is a free extension capable of enhancing your viewing experience by allowing you to read comments while watching a video, scroll-over volume control, and more.