-Sunglasses (I like the Jennifer Lopez aviators from Kohls)
-Changing pad (not so much a "pad" as an absorbant travel cloth to change M.D. on when out and about)
-Spare M.D. outfit (this is usually the thinnest sleeper I can find in whatever size M.D. currently is--that way it will fold up the smallest in my bag!)
What's in your diaper bag?