Here's a neat trick that I just learned in Adobe Illustrator. When I'm putting stuff together, I make liberal use of the Align function. It allows you to make sure your objects are lined up with mathematical precision, saving you the hassle of eyeballing the whole thing. But the problem has always been (or so I thought) that the align function takes the average horizontal position of all of the objects and aligns them all to that. That's great if nothing is integrated as part of a larger plan, but if you have placed one object perfectly, aligning other objects with it throws it completely out of whack. If I wanted to put all of these objects dead center in the panel, I could do that, but it puts that panel itself out of line with the other panels.
But don't worry. It turns out you can designate one object in the bunch that you've selected to be the anchor and make all other objects align to it. After you've selected all of your objects, single-click on the anchor (in this case, the middle panel), which will appear to do nothing whatsoever. Then hit one of the align buttons. Voila! They are all aligned to that one object.
This might seem to you like a monumentally insignificant post, but once I realized this, it practically changed my life. Not having to realign all of those panels saves me a huge amount of time.