Melbourne

Not sure there are any plants that emit natural light.

Artificial plants. Some are really good. I have a fake hanging plant in my bathroom for aesthetics. Cat precludes plants inside. I learned that fake grassy plants will get eaten and puked up on the carpet too

Try Zanzibar Gem (if you don't have cats), or low light plants for more info. You'll still need to do some investigating about humidity levels.

algae

This articlehas some good descriptions with pictures. I think whatever you get you'll have to bring it out of the room occasionally and give it some light and fresh air to keep it healthy. I heard someone once say that no plant is truly an indoor plant.

Without natural light any plant would struggle. You can get an led grow light for a single pot though - like a halo for your plant.

Like this one for example (this is in no way a endorsement of this particular light, it was just the first one I found to link to). That would give you the option of growing pretty much whatever you like.

Things that enjoy humidity and are okay with fewer photons:

https://www.housebeautiful.com/lifestyle/gardening/g28471402/best-bathroom-plants/

Two long narrow pots of succulents to sit on the mirror-sil. Keep one inside and one outside. Swap as required.