Here's a helpful technique when you want to freshen-up some clothing at a hotel and need it to dry quickly. It's useful when you've packed one day short or need an extra day's wear out of something.
The hotel drying technique:
With any luck, your underwear will be wearable again in the morning. And if it's not quite there, there's often a hair dryer to help finish off.
Of course, the technique works anywhere, but it's convenient in hotels where you don't have to worry about drying the towel afterwards.
This tip was discovered by my wife—like many of my most handy lifehacks—in this case while backpacking together in Central America.
Also see: Hotel HQ; Enjoy your hotel room more