Cut the top or bottom of the cereal box so that it is 4 ¼ inches tall. Start at the bottom edge and apply a row of duct tape all the way around the box.
Move the tape up and apply another row so that the edges of each row of duct tape are touching. Continue doing this up the box until you get to the top piece with an overhang length.
Make a cut vertically down each corner of the overlapping tape.
Fold each of these four edges of tape into the inside edge of the box.
Squeeze all 5 of the toilet paper rolls into the box. Organize and add your art supplies.