On the go? 

PrefBar7.0.0

The all in one toolbar(item).  Houses and manages bigger amounts of buttons (Clear Cache, Clear Cookies, ...), Menus (User Agent spoof...) and checkboxes (Javascript, Flash, ...).  Extensible from online-database or with self created buttons. 

About this Add-on

PrefBar started as a simple toolbar to get easy access to common preferences like Javascript, Flash, the proxy used for web access, ... Over the time, PrefBar got further developed to be a container for nearly anything, that can be placed on a button, checkbox or menulist. 

All items may be placed and grouped freely on PrefBar's bar.  The bar itself may be moved using the browser built-in "toolbar customize" feature to anywhere you like (even in foreign toolbars, next to the menubar, ...).