Got an old Pokemon Pinball cart laying around? Then you, friend, have a one-way ticket to frugal gaming fun ... with rumble! Xyzzy has just posted a tutorial on Instructables on how to build a rumble pak that fits smoothly into your DS lite GBA slot. Yes, Nintendo released a smaller version of the pak for the Lite, but you'd have to spend money and be like a normal consumer if you did that. With Xyzzy's plans, you can make a mess, destroy a game cart, and probably injure yourself too!