For gift cards I like to make a pocket. I sewed the sides up to hold the card and did top stitching around the flap edge. Used decorative scissors to cut the sides. And then to secure the flap I attached the buttons and wrapped the yarn around them. Yes I did paint the bowling ball and pin. Not bad. Why use a sticker or stamp when I enjoying painting. My wheels are turning now,I could do soccer, basketballs, or golf. For our two sons who are 22 and 18 gift cards are the way to go for Christmas gifts.
The bottom photo shows with the flap open and a gift card slipped inside the pocket.