What accessories do I need for a macbook?
Agreed on the extra power adapter. I bought a wireless mouse when I got my macbook and I think I’ve only used it once. The trackpad is awesome, so unless you plan to do something really fiddly (like graphics work), don’t bother with the mouse. My most-used accessory is a USB memory stick adapter (or USB to whatever-memory-card-format-your-camera-uses). It’s tiny, cheap and useful. You can get some insane ones that will accept almost any flash card format known to man, which is pretty handy to have stowed in your laptop bag.
Dissent! I have had a succession of big and small laptops and I find that, even though I crave certain accessories (external optical mouse, USB joystick, etc.), I actually spend 99.9% of my time with the laptops using them accessoryless. I’d just get the MacBook, use it for a few weeks, and then see if you actually feel like you need anything else.