These $2 books from Panini are ready to be filled with stickers featuring 18 players from 32 competing teams, plus other images from the World Cup. The $1 sticker sheets are “something kids can purchase with their own money, which is important,” says Kathy Kingsbury, manager of Toy Kingdom at Rockville Town Square. A Panini World Cup van, stocked with giveaways, sticker-trading opportunities and a giant inflatable soccer goal, will visit Toy Castle at the Cabin John Mall on June 30.