Drupal Modules: Administration Menu
You know that rule about the simplest solutions being the best solutions? Well here you have a module that takes all of your admin tools and places them in a simple dropmenu at the top of every page on your site (for admins only, of course). This module is as simple as they come - no configuration necessary (there are a couple of options if you can't live without fiddling) - but it can save you tons of time when your trying to do some serious site maintainence.
Check out some of my other favorite modules.