Flippity.net: Enter your students' names into this spreadsheet and use this tool to group students or choose a random name. Lots of other uses for flippity tools too!
Google Keep - No need to worry about where that sticky note or little slip of paper went. Use Google Keep to secure all of your lists and notes.
Timer: Countdown, alarm, and stopwatch features. It will continue running in a tab as you are working on other things and alert you with sound as well as a blinking stop button on the tab.
YouTube Full Fill - This extension will give you a new link for a youtube video that just shows the video you selected. No other videos, adds, etc. from the page will show.
INFOhio: Even Infohio has an app!
Chrome Virtual Keyboard: Not all websites are compatible with this extension. If the site supports the onscreen keyboard it will show up automatically when your cursor is in a location you can type.