non-p2w tactics for supporting a server and recycling profits back into the server ideas.

im begining to create a cobblemon server called Cobblelabs. The issue is im trying to figure out how i can play my cards right legally. I want to be able to sell THINGS in general to make profit, while also making sure that i follow the ruels respectfully (Eula, etc) while also making it enjoyable enough for players. if that makes any sense.

thoughts?