At Redbox, buy one 1-night DVD rental and get a second 1-night DVD rental for free when you apply coupon code "FERH493WH4". (The coupon can be used within the Redbox App for iOS or Android or at Redbox.com.) That's a savings of $2 and only the third freebie we've seen from Redbox all year, although we saw a free rental with no purchase required three weeks ago.