Harry Potter Slap Bracelet Party Favors Set - Bundle with 12 Harry Potter Slap Bracelets for Kids Plus Stickers, More | Harry Potter Birthday Party Supplies. This Harry Potter party favors set includes 12 slap bracelets, each featuring Harry Potter themed artwork. Sure to delight kids of all ages, these Harry Potter slap bracelets are great as party favors, party supplies, goodie bag fillers, non-candy Halloween treats, trick or treat goodies, part of a gift set, and more. These Harry Potter slap bracelets will pair perfectly alongside any other Hello Kitty merchandise. The perfect size for gift bags, loot bags, and treat bags. Officially licensed Harry Potter slap bracelets are sure to be a hit with Harry Potter fans of all ages. Set also includes Harry Potter stickers and a Harry Potter bookmark.