I have a very small bathroom, which is mostly for our au pair, but also a shared space. I'm looking for storage tips. We would need to store things like an extra set of towels, feminine hygiene products (so not put in the open), and then toiletries. There is a window next to the toilet, so I'm hesitant about a closed off shelving unit that may block it. It's a walk through bathroom, so the wall space is very limited due to the two doors. Ideas??