This is basically a stripping back of the main toodledo site to fit in your sidebar. The slim browser works great, but doesn't allow me to work very fast. This way I can use fluid.app for my main Toodledo (with regular styling), and this in my Firefox browser for quick reference and adding. It would be good to know your toodledo shortcuts if you are going to use this.

To install it, just load the stylish theme or install as a userscript with Greasemonkey. Then add Toodledo to your bookmarks. Click the bookmark properties and make sure to select "load this bookmark in sidebar".

Voila!