Others (and some of my favorites) let you earn cash or gift cards for purchasing items you'd buy anyway, such as using cash back credit cards, scanning receipts, or taking advantage of store coupons and loyalty rewards. The Capital One Quicksilver Cash Rewards Credit Card offers unlimited 1.5% cash back on every purchase, every day, and you can earn a one-time $200 cash bonus after you spend $500 on purchases within 3 months from account opening. The Discover it® Cash Back offers 5% cash back on everyday purchases at different places you shop each quarter like grocery stores, restaurants, gas stations, and more, up to the quarterly maximum when you activate and 1% cash back on all other purchases.