Sometimes, too much creativity is really, really bad. Take, for example, this scan from an old issue of McCall magazine telling parents to decorate paper bag costumes for their kids:
Decorated paper bag costumes are easy to create. Children can design their own bright creature costumes for dress-up and party time. Paper bags become colorful creatures from another planet when children let their imaginations go free to maek their own fun faces or those shown here. Use large paper bags (approximately 24" x 32") from the cleaners - do not use plastic bag. Paint, then decorate each bag with scraps of yarn, bright paints, colored paper, and glitter to make the fun-face costume. Cut small holes in top of bag for vision; vary face by creating animal creature with holes at sides so arms can extend in hornlike fashion.
On second thought, if you don't have stairs in your house, these costumes are genious!