SNAPPLE is having a yard sale. Through Nov. 30, consumers collect special caps and redeem them at snapple.com for goods and prizes, such as scooters and old Gremlins lunch boxes. And just like a real yard sale, participants can haggle online by making counter-offers for individual products. The promo will be flagged on more than 300 million bottles. Snapple.com will host a sweepstakes dangling prizes such as a Nintendo GameCube and a trip to the MTV Real World Paris just for registering at the site. This month, White Plains, NY-based Snapple will host two live yard sales in New York City and San Francisco in suburban house facades. Six new TV spots support, as well as P-O-P displays with cooler boxes and yard sale booklets. “Wendy the Snapple Lady” will make appearances at local retailers. Deutsche, New York City, handles both the TV and promo elements.