Where do i buy nintendo ds accesories from Girl Gamer Magazine ?

In issue two of Girl Gamer magazine, on page 30, there are accessories for nintendo ds.They mention the prices, but not where to buy them.I wanted to get the tartan bag and magic tube game cart.I looked on ebay and the nintendo store, but i cant find them.Are they in any stores or a website where i could buy them?|||I'd suggest you write a letter to the editor of this magazine, to get more info about where to get them.