Heavy-Duty Locks

Lightweight travel locks provide minimal security, in part because they're only as strong as the tiny security slot on your notebook's chassis. For greater strength and security, a lock like the $24 Belkin Bulldog Security Kit isn't nearly as elegant as its lightweight counterparts, but its steel anchoring plates and heavy-duty lock will last a little longer against a more determined thief. It also comes with a $500 antitheft warranty.