Japanese convenience store chain Lawson is no stranger to anime promotional campaigns. According to Crunchyroll (via Netlabo), they are currently running a Prince of Tennis one set to end February 2nd and there will be one starting February 3rd involving the currently airing Yowamushi Pedal: Grande Road. (There were previous Lawson Yowapeda campaigns in July/August 2014 and September/October 2014.)
The Prince of Tennis campaign that ends this Monday has items like keychains, straps, and branded tissue boxes for purchase along with some things you can get through lottery drawings. Below are a couple YouTube videos of people showing off what they obtained from the promotion.