A Chrome extension that blocks recommended videos in the sidebar and endscreen from showing up, to avoid distractions.
Download the code as zip and unzip it. Go to chrome://extensions/ and turn on developer mode. Click "Load unpacked" and choose the folder you unzipped. Pin the extension for easy access.
Every time the extension window is opened, it resets both toggles to the off position, so sometimes you need to click twice for the toggle to work.