On Facebook, you can send someone a Mother’s Day ecard and receive a FREE movie code for yourself!
Go HERE to send the card.
Also, if you are new to Redbox or somehow have not liked their Facebook page by now, go HERE for a FREE code just for being a fan. You can use this one once per credit/debit card.
I also noticed that they have a location finder on their Facebook wall already set up for you based on your Facebook location.