If you fancy solving a load of cryptic puzzles by scribbling down the names of useful objects that then come to life before your very eyes, then you might want to pick up a DS copy of Super Scribblenauts from Amazon for £5.97, which'll make you a saving of just over £3 on the next best offers out there. This one rewards you for thinking creatively and there are plenty of levels to crawl through, as well as a level editor to keep you coming back for more. Thanks to goonertillidie @ HUKD.
There aren't many situations where you can solve problems by scribbling in the name of objects that then come to life before your eyes, so it's probably worth taking a punt on Super Scribblenauts. You can make the objects a bit more useful, or colourful, by assigning adjectives to them and this kind of creativity can be pretty good fun. You can get hold of a copy of the game from Choices UK for £8.49, which'll make you a saving of £2.50 on the next best offers coming in from Amazon and HMV. Just remember to be quick with this one because there aren't many copies left.