If you are looking to make your gmail inbox a bit more zen, check out this Firefox add-on.
What it is: MinimalistGmail, a Firefox add-on
What it does: Allows you to configure what you see on your screen, such as chat, header/footer, specific buttons, etc.
Interested? You can always test it out and then disable the add-on if you decide you don’t like it. (Not sure about add-ons? This might help.)
To install this add-on, you must be using Firefox as your browser. You can find more information and download it here.