American Express is currently offering a $25 statement credit on $250 in spend at BestBuy in-store or online. A little bird told me that you can sell a $250 BestBuy gift card at between 99% and 101%, netting you some spend and some cash back.
Also, check your inbox for a (boring) offer from Amex for a $2 statement credit for using contactless payments, up to 5 times.
Too bad it doesn’t compare to this offer: