Buying a limited girl her first jewelry box can be a big deal, so looking her something that will last a long time, both while in use and for her memories later, is important. Knowing the types of jewelry boxes available will make your crusade easier, and help you tailor your buy to her exact interests.
Jewelry boxes are highly customized, both in stores and online. A quick crusade will find a amount of websites that sell them, all of them designed specifically by the website owner. Some of the more unique models I've seen are modeled after girls' attire, like a purse-shaped box, unblemished with leather straps that stick up on either side, or musical instruments like a piano. If the girl you are buying for has interests in fashion or music she'll be particularly interested in jewelry boxes like this.
There are also themed boxes that are patriotic - photograph a heart-shaped box with the United States flag on top and hearts instead of stars on the flag - and you'll get an idea of what's available. Unsurprisingly, the Us and Britain are two of the easier countries to find boxes for, though a limited digging will find other countries. You could also make one on your own, or commission an artist to produce one to your specifications.
There are also boxes that don't easily look like boxes at all. A ceramic jeweled apple that opens to hold a few pieces can add some elegance to the bedroom, or a Faberge Egg inspired box can be an absolute eye-catcher. But this may be a limited too much for a young girl, so reconsider her age while shopping.
In the end, there is such a wide range of jewelry boxes available you should easily be able to find something that suits your limited girl especially well. Keep an eye out, and don't be afraid to spend some time hunting!