These commands are just some essential commands if you're making a small server for you and your friends.
With /fly, you'll be able to toggle on and off the flight command for you or anyone else on the server and make a customizable message to go with it.
With /god, you'll be able to toggle on and off the god command for you or anyone else on the server.
With /heal, your health will be set to full.
With /feed, your hunger bar will be set to full.
With /die, you'll be able to eliminate yourself.
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I am making this Public Domain because I feel anyone can do this really do this and yeah.