Protecting a Laptop in a Surge-Ridden Area
Solution 1:
Most laptop power supplies cope with a wide range of input voltages and coupled with the battery itself, effectively gives you a UPS. If you are expecting surges, though, a surge protector is a good idea.
The biggest risk, however, will be theft and so I'd recommend insurance, a decent cable lock, keep all valuable data, photos etc. on encrypted USB sticks that you keep with you or locked in a hotel safe (where applicable) at all times.