Sure, keyboard shortcuts are handy to have – but sometimes a button is even better.  The Closed Tabs Button add-on for Firefox will give you an easy one button access to all of your recently closed tabs.  If you are tired of going to History > Recently Closed Tabs just to undo a closed tab, then this extension is for you!

Not only does this add-on give you a fancy new button, it also gives you a new keyboard shortcut to access the most recently closed tab (CTRL+SHIFT+Z). 

After installing the extension, to add it to your own browser interface you must add the button by going to View > Toolbars > Customize, then drag and drop the button anywhere on the toolbar.

The Closed Tab Button add-on for Firefox might be a little on the simple side, however when there is just a little problem to be fixed – nice to see an extension that gets the job done right without too much bloat.