Get £25 cashback through GreasyPalm until 2nd Jan (or £20 through Quidco) + free "Deal or No Deal family challenge" DVD game, (AKA Poor mans console) at Jackpotjoy.
Also if you are not a member of GreasyPalm you get £2.50 for signing up. You CAN get the DVD delivered by Christmas too, quote from site:
For Christmas deliveries, we recommend that you join by the 17th December to ensure receipt before 25th December.
NOTE: that you do have to wager 4x your deposit + bonus so £80 for a £10 deposit before you can withdraw. If you want your money back, get a coffee in and Play Deal or no Deal normal game and just keep dealing to play through the £80.