Nintendo has launched a rumblepack specifically for the DS Lite, meaning there aren’t any bits an pieces sticking out like on the regular DS. The DS Lite rumblepack costs the same as the old one, $15 (or 1,650 Yen). Only avalible in Japan at the moment, but we expect it to hit the U.S. and European stores shortly. Games supporting the rumble feature at the moment;

Metroid Prime Hunters
Magnetica (Shunkan Puzz Loop)
Naruto RPG 2: Chidori versus Rasengan
Mario & Luigi: Partners in TimeMetroid Prime Pinball

Via Siliconera (Thanks, Jon)