We've seen a lot of custom T-shirt projects, but none that allow kids to customize their shirts on a daily basis. This shirt's clear plastic pocket lets kids display their obsession du jour.
When drying the T-shirt, always hang-dry to protect the plastic pocket.
Cut 1 pocket from the center of a trading card page, leaving a 1/4-inch margin around the seams.
Secure the pocket's top and bottom in place with masking tape.
Thread the needle with the floss, knot the end, and use a simple whipstitch to attach one side of the pocket to the shirt. Remove the bottom tape and continue stitching, leaving the top open.
Remove the remaining tape. Place an object in the pocket.