The 8 in 1 kit for the DS Lite is a really good buy, and if you purchase it from Argos you could even get a free game thrown in. There is also an alternative if your considering buying a new DS Console, you could get this kit for free. It all depends what offers Argos have on at the time.
I got my kit free when i purchased my new turquoise DS Lite console, and i also got Brain Training game free too.
Back to the 8 in 1 kit, it includes a really sturdy and smart looking zip up console case with strap. The screen card protector and soft cleaning cloth are essential when cleaning and caring for your console. A carpower adaptor/charger is also included - great for the children if they want to play on long car journeys. You can store your games safely in the 4 x game cartridges, and listen to your games in peace without annoying mum and dad - on the stereo headphones all included in this kit. A extra wrist strap to attach to the console, and 2 x spare stylus pens are also included.
This kit is real good value for money, a good example of this is when i was looking online for a spare stylus set - i saw that the cost was almost as much as the whole of this kit.