Reuse Dad's old college or sports tees to make cool keepsake pillows for Father's Day. Cut the T-shirt fabric to the desired size, allowing for 1/4-inch seams. Sew with the wrong sides together, making sure to leave an opening to fill. Use filling or forms to stuff the pillow; sew closed (push the filling to the bottom of the pillow and feed the unfinished edge through the sewing machine). Get creative with your design—different sizes, multiple shirts on one pillow, and embellishments can personalize the gift.