Cosmetics and Esprit clothes
I write from Spain so I am not sure if this is useful to you.
Some cosmetics are cheaper in Germany than in Spain, France, Italy and some of them cheaper than in the US. Facial treatments and moisturizers named Olay are called Olaz in Germany, I think, and they are cheaper in Germany.
And Esprit clothes are also cheaper than in some other places.
There is a nice Outlet Mall near Stuttgart with good prices in many clothes brands, like Hugo Boss. I don't remember exactly but can look for the exact place if you are interested.