/cheat on - Enables cheat codes.

/setflight true - Enables flying and going through blocks (use f).

/loot Item *insert item id* *amount* - Gives you a certain item.

/time add *insert number* - Adds the number of hours stated. Use negatives to go back in time.

/teleport *insert x* *insert y* *insert z * - Teleports you to the specified location.

/teleport banner - Teleports you to your banner.