welcome lisa, the flagship stores (paris, LA, NYC) would have big selections but ebay is a terrific source for finding discontinued varieties of them, timeless pieces always has neat ones and perhaps bagteria sometimes. good luck!
Call around to various H stores or ask your SA to look for anything in particular. They can call around too. That's how I found a several that my SA said something like there are only 3 left in the US. Good luck.