Tempaper By You
Tempaper's removable, repositionable wallpapers are already in a renter's arsenal for jazzing up walls without running afoul of your landlord, but if you have a truly custom design in mind, they now offer an adhesive blank canvas that you (or your kids) can decorate with paint, pen, crayon, etc.: "For the artist in everyone. Let your imagination guide you when decorating your space with Tempaper by You. A temporary wall canvas for use with pens, pencils, markers, paint and crayons."