Today, December 20th 2015 only, Target is selling gift cards for 10% off, up to $300 worth.  You can get them online or in store.  There is supposedly a limit of $300 per household, but there is nothing stopping you from ordering $300 online, then heading to a few stores to pick up more.  Remember, you can use these gift cards to stack up and get Disney Gift cards using the Target 5% discount.

I personally used my Citibank American Airlines Credit card to get some airline miles and an eventual 15% off my Disney Gift Cards (10% for the sale + 5% off with the Target 5% discount).  Let us know in the comments if you were able to get some savings as well!