Solarpunk

Hey everyone, I'm fairly new to the concept of Solarpunk and since in the near future I'm going to be the owner of an apartment I wanted to know if the community has any suggestion about practical things I can do in an indoor only environment.
The place is a small attic and has 3 rooms: a kitchen+livingroom, a bigger bedroom and a smaller bedroom/studio. It has got plenty of sunlight coming in. If you need more info please ask

Edit: Thanks for all the kind suggestion, unfortunately the house has no balcony, but I'll try to gather knowledge on the other topics that came out in the comments.