Volunteer with a charitable group or humanitarian organization and you can earn travel discounts and other benefits. Purchase a Volunteer ID Card for $29.95 (with color photo) or $25 (without) and receive savings at more than 40,000 US restaurants, low-cost air and train fares, and discounts on accommodations and car rentals.
Travel over 700 miles from Sydney to Melbourne aboard the Great Southern Rail, for instance, and you'll pay $176 instead of the regular $368 fare.
The card gives you worldwide travel assistance 24/7, low-cost travel insurance, and discounts on international calling cards and travel products. 800-255-7000, www.volunteeridcard.com
Photo: Volunteer ID Card
Posted by Kari Bodnarchuk, Globe correspondent