What a deal! Target has released a printable coupon via their Facebook page - Spend $50, get a $10 gift card! Print it here.
If your Publix or other grocery store accepts Target as a comepetitor, then you can use this coupon there too! I know at Publix they'll honor this coupon with a $10 Publix gift card.
And remember - your total only has to be $50 before coupons!