The Backpacker stack was only just mentioned to me as solving a feature request I recently posted about. From what I can make out though it's not new, I think it's a good few years old now, but IMO it's one of those utility stacks that everyone needs.
Details here: http://www.defligra.com/layout-stacks/backpacker-stack/
In a nut-shell it helps you manage your edit screen, making everything far easier to find your way around, and some really cool features on top of that.
It costs a fiver.
This is my good dev deed done for the day