Thumb Drive - These things are so handyóno pun intended. Almost every company that makes digital media makes some kind of USB flash disk or "Thumb Drive." GMx gave high praise to the Fuji USB Key Drive but others are available. Look for durability in the case designóthe more ruggedized and rubberized the better. Pay attention to the clip and the ring where the lanyard attaches. Some drives have both, some have neither. Make sure your's has what you need. And of course, look to get the best drive capacity for your money. Give eBay a search for these from time to time.

Mouse - I realize, of course, that you don't really need a mouse if you learn to master your 'Book's trackpad. But some occasions call for dragging and clicking maneuvers that call out for a good mouse. There are quite a few "mini mice" on the market that take up minimal space in your case (I've reviewed a Macally and a Swann) and there are also full-size mice with retractable cables fit for the road (the Kensington Pocket Mouse Pro comes to mind).

Task Light - If you are not one of the chosen few who can afford a 17" G4 PowerBook with the fancy-schmancy illuminated keyboard, you will one day more than likely find yourself in a situation where the ambient light is so low that you can't see the keys of your keyboard. In these circumstances it's nice to be able to reach into you backpack and pull out a USB powered keyboard light. There are several makes and models to choose from. Try to stay away from those that clip to your screenópressure on the LCD just ain't healthy. Kensington's FlyLight is pretty nice.

Card Reader - If you've got a digital camera a 6-in-card reader can be a lifesaver when your camera's battery has been drained and you need to access those pics. Also, while you wait for high capacity thumb drives to come down in price, you can improvise using much cheaper Compact Flash cardsóa 128Mb CF card goes for under US$20 these days on eBay. It doesn't look nearly as cool clipped to your jeans, but when you're on a budget, you do what you have to. :D

USB hub - I use these things all the time and I have yet to find one that I really like and can proclaim to be the one USB hub to rule them all (the ones pictured to the left are quite good, though). They all seem to sneak their way out of your USB port mid-transfer or or have the USB plug bust off inside your 'Book under the strain of the multitude of attachments. But if you are a gadget addict like I am, they are a necessary evil.