— Blue Chip Stamps: Buffett and Munger, Berkshire’s former vice chairman, took control of Blue Chip in 1970 when the customer rewards program was generating $126 million in sales. But as trading stamps fell out of favor with retailers and consumers, sales steadily declined; in 2006, they totaled a mere $25,920. However, Buffett and Munger used the float that Blue Chip generated to acquire See’s Candy, Wesco Financial and Precision Castparts, which are all steady contributors to Berkshire.