Buy two Pampers Super Mega packs at Target between May 10th and May 16th and get a free $5 Target gift card at checkout! Find the details here. Let's hope they have a sale to go along with this.
The best part about Target gift card promotions is that you can use your first gift card when you pay for another round of the same deal. If something's at a really great price, you can do this multiple times!