[Tautologistics]

Here's a bookmarklet:

  javascript:(function () { var script = document.createElement('script'); script.onload = function () { TowTruck(); }; script.src = 'https://towtruck.mozillalabs.com/towtruck.js'; document.getElementsByTagName('body')[0].appendChild(script); })();

[ianb]

There's also an Addon (https://github.com/mozilla/towtruck/wiki/Addon) which is basically equivalent to a bookmarklet like this where you activate the bookmarklet every time you load a new page. It's only intended to trying TowTruck out (like the bookmarklet).