We've had this tutorial from Maya Made's archives bookmarked for a while. A kite that only requires a few simple household items and actually flies- sounds good to us.
You only need regular 81/2" x 11" paper, markers for optional decorating, string, hole punch, tape, an 8" bamboo skewer, scissors, cardboard for wrapping the string around, and a plastic bag. Like Maya wrote, chances are you've already got all of this right in the house.
Head over to Maya Made for this easy tutorial.
(Images: Maya Made)