Corby Argos Clearance Warehouse are selling the Nintendo DSI accessory kit for 50p. (It is the black basic set)
They had loads of them ideal for a stocking filler or even a main present from a relative who has not get a lot of cash to spend.
A child who has a DSI would love this as it has case, stylus and other accessories in the box.
Sorry cant find a picture to post.