The "Win an Extra Sunday" promotion will run from May 16 to Sept. 6. To enter, consumers should visit www.liptonsunday.com and enter codes found under caps of specially marked Lipton bottled iced tea varieties, including Peach Iced Tea and Diet Green Tea with Citrus. Instant winners will earn minutes, which count toward having Lipton complete a task on their “have-to-do” lists, such as researching airfare and vacation spots online, mowing the lawn or doing laundry.