Based on my earlier work: ClearAllCookiesButton 0.1.4
This extension was completely re-written with the new 1.14 SDK.
1. Redesigned interface: Now it's pretty.
2. New Icon.
3. Added right click to button to open Cookie Manager Window.
4. Restartless Add-on.
NOTE: Compatible with Firefox 20+ ONLY: If this new version is not compatible with your version of Firefox, please see the old version for better compatibility. ClearAllCookiesButton 0.1.4
INSTRUCTIONS FOR USE:
1. Install Add-on.
2. Enable Add-on bar by right clicking on the top window bar of Firefox and putting a check on "Add-on Bar".
3. Left Click the Cookie Icon to delete all cookies, Right Click to open the Cookie Manager.
NOTE: The cookie icon will be on the bottom-right of your browser window on the Add-on Bar, but may move depending on what other extensions you have installed.
(Please do not rate 1 star because you did not read the instructions above!)