Sunglasses - I have a pair of Oakley Minutes that are probably close to 4 or 5 years old. I got them through the eye doc, so my prescription is "built in". I looooooove them. They give great peripheral vision and keep the boogies out of my eyes. It is so much better than the old clip-ons I had to go over my regular glasses. If you can do it, get a pair of biking sunglasses with your prescription. I've heard a lot of folks rave about how much they love their Rudy Projects, too.
Mirrors - I have a Zefal bar-end mirror. Had the same mirror on my last 2 bikes. Unfortunately with my aluminum frame and the wacky stuff I ride over in my commute, it keeps flopping no matter how I try to settle it. I'm starting to notice that it distracts me more than it helps me. I'm planning to get a glasses mounted mirror next.
Tool - Park Tools I-beam is nice, but I sort of wish I'd gotten the Topeak. The I-Beam is a little sloppy.
did you fix your seat?
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson