Hi Sebastian,
quite nice designs. As we are a pastry shop cafe which provides hot beverages and hot courses, we are/was thinking about the "steam smoke" idea, as you can see in our contest most designers are following this idea, this is because we are thinking that a smoking cup of coffee is too much "lock up". The thing is that we would like an abstract idea which can be related with our food, cakes and coffee but not "lock up" with only one of them. So, if you have such a different idea I'm pleased to see it. We look forward to see your doveloped ideas.
Regards
Fabrizio