Any ideas to make minecraft fun?

Recently, I'm starting to get bored of minecraft because I've got nothing to do.
Does anyone have any interesting ideas that would make me into minecraft again?
If there's any suggestion, the please make a list

. Play it with your friends.
. Post a minecraft series on YouTube.
.Build a city/town.Build a mansion.set goals.Watch videos for inspiration.
.Add mods. Make a minecraft movie
. Try teaching someone how to play minecraft.
.Build a tree house.
.Play minecraft games.(i.e. Hungergames/hide and go seek/ competition s)

I made an under water castle

The game is very boring and repetitive. Try playing Terraria.

Uninstalling it was fun for me