Amazon is offering $10 off select gift cards from July 11th – 12th. Go here and scroll midway down the page to see them all.
The one that jumped out at me is the Thank You card b/c it includes Chevron if you have one near you that has decent priced gas.
Read the details of the card you select and see if it saves you $10 off at checkout or if you get $10 off your next purchase in bounceback offers.