Balancing a laptop on your lap isn't exactly fun. It forces you to keep uncomfortably still and endure the considerable heat produced by most models. Enter the RollerTop, a clever accessory that turns your carry-on's telescoping handle into a convenient notebook stand.
This could come in really handy if you're stuck in a long line and need to dash off a few e-mails, or you just can't find a seat in the airline boarding area. It's also perfect for those times when you need to position your notebook near a projector and there's just no good surface. The RollerTop sells for $39.95.