I share a bathroom with a girl

[MrBean]

Hi

I spent 3 days a week in a shared appartment (it is a kind of hostel) where all of us have our own bedroom but I share the bathroom with a young student girl.

I want to set up something to film her, a kind of device that can be left in a bathroom without suspiction of her

Any advice? I spent some time looking at amazon and haven´t find something interesting

I think in a kind of product bottle (shampoo, barber shave cream, etc) with a hidden camera

Please give me your ideas