Trace a circle on the cardboard using a CD including the circle in the middle. Cut the outer circle using scissors and use X-Acto knife to cut the inner small circle.
Draw a line for the base. Also, draw some large bite marks-like curves on your desired opening enough for your phone to fit in. The cut out the lines and curves.
Using your finished donut shape. Trace and cut some more (a total of 12 pcs). Split to use in sections – front, back/bottom, and middle section.
For the 4 pcs. to go to the middle section – Trace the bottom part of your phone making sure it fits as well as cut the middle part of the donut for the wire to go through the cable. Glue all the pieces together.
Use construction paper to cover the edges and front of the donut. Use puffy paint and spread it to make the frosting of the donut and Cut little sprinkles from construction paper and glue them to the front.