Have you tried your server's Local timeline yet? 🥳
On a huge server Local is a mess, but on smaller servers it can be really fun and friendly. It's especially good on servers with a particular theme.
If you're using Masto's official app, click the magnifying glass 🔍 and then the Community tab. This is your server's Local timeline.
If you're using a web browser, click on "Local" or 👥 at the right of the screen.
Third party apps will also have their own interface to access Local.