BirthdayExpress Super Mario Party Supplies Empty Favor Boxes (4) These Question Mark Favor Boxes make excellent party gifts to hand out at your child's birthday celebration. Stuff them with toys of the characters from the video game. A Super Mario Bros birthday party brings the video game to life right in your own home for your child and all their friends to enjoy. Add matching tableware, favors, accessories, or a party kit bundle to complete your Super Mario birthday party.