There are electronics stores that blare, "art" stores with porcelain anything that offend, jewelery stores that glisten, and souvenir stores that . But you don't want any souvenir, you want something that says, "I was in Chinatown" but not "and all I found was this lucky cat." May I recommend the Canton Bazaar? It's right in the heart of tourist Chinatown and has more authentic Chinese wares like tea sets and snuff bottles. You'll have to walk to the back past the medicine balls and silk purses, but it's worth browsing museum-like displays.