Recently I discovered a Chrome extension in the app store called New Tab by Getty Images.
This is a tool that does just one thing - every time you open a new tab, you will have a new beautiful photo from the Getty collection appear. Along with the date and time in the corner you can also have a Google search box in the middle of the screen.
Check out this is an example a new tab:
Now for me, I like having the Google Search box turned off so that I can appreciate the photo.
You'll be quite impressed with the selection and quality of the photos which appear. Now for me I often find myself just keep hitting the keystroke combo of CTRL + "T", which is "open a new tab", again and again to just keep getting more images.
Oh... there is one negative with this extension. It is that you will often forget why in the first place you actually NEEDED to open a new tab!