Nintendo's 2DS may be unhinged (I do mean that literally!), but it sure is cheap. £89.99 has become the de facto deal price for one of these 3DS-compatible handhelds, which is already fairly nifty, but Argos have gone one better by bundling LEGO LOTR into the bargain. Not that you'll have time to play it, mind, since you'll likely be getting stuck into Fire Emblem Awakening, Animal Crossing: New Leaf, Pokemon X or Y, SteamWorld: Dig, Zelda: A Link Between Worlds or the magnificent Bravely Default.
Personally I'd recommend the 3DS XL as a more practical piece of kit, but... £89.99. Thanks to pauledwardking1 @ HUKD!