You can buy $100 Staples Gift Card and get a $10 Bonus Code on eBay through PayPal Digital Giftcards. The gift card will be sent out with email delivery to the email address associated with your PayPal account.
There’s a limit of 3 per buyer and about 15,000 gift cards available.
You will earn 2% eBay Bucks and you will get 5% if you pay with your Ink card through PayPal.
Also go through shopping portals such as TopCashBack for 1.25% or test out iConsumer that’s paying 8% up to $20 a month.