1. To begin, the pop fountains (Is that their official title...?). Notice anything missing? Ice! While I only saw these fountains a few times (this one in particular was at Subway), many of the drinks we were served did not have ice. It just isn´t common here.
10. Liquid soap at hotels! This may not be everywhere here...and there very well may be hotels with this at home...but I have never seen one in the US! All we normally get are those bars that are "face soap" or something like that. It is very frustrating. Clearly the Germans get it.
While there are MANY differences between Germany and the US, these are just a few of the random ones I found. I hope you enjoyed and appreciated them as much as I have :)