I use some Apple subscriptions, and regularly buy things from the App store. The cashback on the Apple card seems like a no-brainer. I asked a friend to send me a referral, and signed up for a card. I was approved, and am now waiting on the bonus to hit.
The referral seems totally generic. My friend gets nothing, I get $75. Anyone can use the referral link: https://apple.co/referdailycash.