Wasserdame
Someone at work brought in a cost-effective device for lonely men. Said device was found in the the prophylactic dispenser in a public restroom. He said he was curious "was is das 'travel pussy'?".

The device is a plastic bag you fill with warm water in one end (and secure) and finish with lubrication and personal extremity in the other end. Cheap and Convenient. I should suggest to Rick Steves for his next trip through Europe's back door.