I wanted to give an example of the gift cards I'm selling with purchases. So I made a couple. What I'll do is insert a page with your message that can be removed and the card kept or reused, or whatever.
I make them up as we go along, so anything you have in mind, I'll listen. These two I have on hand as they are demos. They are $2.65 and will be wrapped in tissue paper and tied with a ribbon before being tucked in with your purchase. The cards are professionally printed on glossy card stock.