check at an electroc store like the source. you could also try calling the manufacturer for a new charger. my sister bought a Nintendo DS and the charger didn't work, so she called the company and they sent her one free. since you broke it, you'll defiantly have to pay for it, but that's what you can do, if you go to some specialty stores [The Source, Future Shop so on] and can't find one, or they can't order one in, call the company.
depending on how broken it is, you could wrap it back up with electrical tape for the time being, but otherwise, just buy one. also, magick can't help. while you could cast a spell to find it if it was missing [or perhaps increase your chances of finding one while shopping] you can't wave a wand over the charger and it fixes itself.