10% Cashback on Uber Eats Gift Cards of value $50 or Higher on Cashrewards.
Pretty good as you can use these on both Uber (for rides) or Uber Eats (for food).
Gift Card expires 3 years after issue date.
I've got this targeted offer on my CR account as well, so stacked it for $5 additional cashback:
$5 Bonus Cashback on $20+ Spend (Activation Required) @ Cashrewards
I didn't think gift cards were allowed to have an expiry date.