Sometimes you may need to make a few adjustments to some add-ons so that they behave the way you want them to. If you install tons of add-ons, this Add-on Preferences Button can help you access add-on options more quickly.
This restartless extension adds a button to Firefox navigation toolbar and a menu item in the Tools Menu. The menu item can be hidden if you only need the button.
A click on the button reveals a compact list of all of the add-ons. You just have to click on any of them to get the preferences window open.
Get Add-on Preferences Button 1.1.3 from here