We mentioned a way to do this in the article, One Firefox Toolbar to Rule Them All, here at Lifehack, but this extension makes things a little simpler when it comes to just altering the menu bar.
The Personal Menu Firefox extension works in a similar manner to Tiny Menu, which puts all the menus [File, Edit Bookmarks etc] under one parent menu. However, Personal Menu has a few small differences.
The first is you can select which menus you want available on the toolbar. Each menu drop down is changed to a button.
Personal Menu’s real strength is in the custom button you are able to create that will only feature a list of options in the menu that you personally want in there. This is ideal if there are only a few items you frequently use from the menu bar and want quick access to.

Personal Menu - Via [MozillaLinks]







[...] Personal Menu – If you are a laptop user and would like to save some browser real estate, you might already be using TinyMenu. It does a great job of letting you customize what you see on the toolbar but Personal Menu takes this to the next level and lets you create a custom button with only the menu options you want to access frequently. A must have for usability. [via Lifehack.org] [...]
[...] I’m constantly tossing interesting websites into what I call my blogpile. Some of them find their way here in the form of regular posts, but more often than not they languish and get buried deeper in the pile. The end result is that I have to go back and do a bit of shoveling. Today’s item is Shorten & Personalize Your Firefox Menu Toolbar. [...]
[...] Personal Menu – If you are a laptop user and would like to save some browser real estate, you might already be using TinyMenu. It does a great job of letting you customize what you see on the toolbar but Personal Menu takes this to the next level and lets you create a custom button with only the menu options you want to access frequently. A must have for usability. [via Lifehack.org] [...]