The “World’s Largest Crayon” — six or eight feet — can be won by shoppers who pop an entry into the sweeps “official entry box.” It’s offered by Bagwell Promotions to retailers who want to add a little in-store fun and increase traffic. It’s filled with brand name toys, backpacks, rulers, pencils, protractors, board games, a SpongeBob SquarePants tin, NFL books, an “American Idol” All Star DVD game and other stuff that kids 13 and under would love to take home.