You've asked about stylish ergonomic mice before, and we think we've found a great contender for you. In addition to saving your wrist through a slightly rotated and more natural position, it doesn't look as—well, ugly—as some others, and it eliminates some of that awkward "getting to know you" time as you'd expect when you switch to a joystick-style mouse.
The Handshoe Mouse comes in white, clear or black, perfect for matching that MacBook, and three sizes.
This optical mouse doesn't require any software. Just plug into a USB port and start clicking. No awkward buttons either; just your standard right click, left click and scroll wheel stuck between.