The Omnibox is your friend.
Quickly see images in full size with the Hover Zoom extension.
Source: reddit.com
Get quick word definitions with just a double click by adding the Google Dictionary extension.
Add the extension here.
Source: chrome.google.com
Pin your most used tabs to the left to keep things clean and allow for more space.
To pin, just right click on the tab itself and select "Pin Tab." They will be anchored to the left and the "X"s will disappear so you won't accidentally close them, either.
Set a reminder for yourself from the search bar.
First, get the extension here. To set a reminder, type "tm" to activate the timer extension, then tab or spacebar, and finally the time and message. At the time you specify, you'll get a desktop notification with your message.
Source: hongkiat.com