Pan for Gold -- You can learn to pan for gold through Jamestown's Gold Prospecting Adventures (tel. 800/596-0009 or 209/984-4653; www.goldprospecting.com). The hour-long class is about $20, plus you get to keep any gold you might find.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.