beauty smartphone case

#011: A smartphone case for busy women on the go

I see many women nowadays taking care of their makeup on the subway, in the train or just on the go. What I notice is, even though they are being arts-and-crafty, they nearly always keep their phone in their hands.
Why not putting an iPhone/Smartphone multipurpose case in their hands. It could contain a lipstick, mirror, eyeliner and more. Of course, they need to be ultra slim in order to keep the case thin.