Ask HN: How to turn a “toy” side project into a business?

We launched http://hallway.chat a couple weeks ago and since then hundreds of teams have signed up. They're all free users, but daily usage is pretty high.

Hallway started as a fun side project / "toy app". It creates temporary video rooms in Slack for teams to connect and make working from home less lonely.

I wanted to ask if anyone has any ideas about how to think about turning this into an actual business given there seems to be some interest?