You will need:
- a new shirt or you can "upcycle" an old t-shirt. 1-2 sizes larger than your child
- sewing machine
- Paint (optional)
and then cut off the bottom hem from the shirt and cut into two 12 inch strips.
2.) sew the edges of your strips to the edges of each side of the shirt.
Have your child decorate the t-shirt in any style or leave blank and see what fun "accidents" happen.