The Amazon associates program is having a promotion for August, where you get 10% back from gift card referrals.
Anyone can sign up to the associates program using an existing Amazon account
1. Sign up for Amazon associates program (you can use an existing Amazon account )
2. Create a referral link to the gift card
Follow steps on deal page
3. Get someone in your household to order a gift card using the html link using a different account. Note: Amazon does not allow self-purchases using your account, so you must use another account besides the one you used to create your Amazon associates account or you will not get the 10% back.