For the long term you can go into the stocks (Not a big fan of them) but they can give you some good cost in returns. You can also do Food club (if you're account is pretty old), there is the standard Games every day to make easy NP.
If you want to become an Official Ck then my suggestion to you is finding ways to get Rep. Making guides, lending pets, helping people with homework etc. Or you can just buy Premium for like 5 bucks and it'll get you access to every program on the site despite your current status. Good luck!
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