Most of your luggage is clothing. The secret to packing light is taking just a few clothes, and spending 10 minutes each night washing them.

Wash and rinse your clothes in the sink or shower of your hotel. Pack a flat rubber jar opener or rolled sock to stop the drain. Pack a single small soap for your face, hair, body, shaving, and clothes washing. Wear your socks like mittens and scrub everything. Then roll your wet clothes in a towel, and twist the towel tightly to squeeze out most of the water. Finally hang up your clothes.

In the morning, if you're leaving the hotel and your clothes are still wet, just wear them. Damp clothes feel great in the summer, and your body will quickly dry them.