Cereal Box Hidden Compartment

A hidden compartment in a cereal box to store money or other small things.
Supplies

Empty cereal box, tape, cardboard roll, duck tape and string
Cutting

Cut a small flap in the back of cereal box, and cut the roll of cardboard in half to make two pieces.
Taping

Tape the two pieces of cardboard together to create this shape. (optional tape the top of the cereal box after project is complete)
Attaching

attach the cardboard behind the flap inside the cereal box to create small shape.
End Result
