What should I do in minecraft after I beat the dragon?

I recently beat the ender dragon and I'm wondering what I should do now. I have all achievements so there's nothing really to work towards. Maybe some building ideas. I don't know.

Play on minecraft servers it's like a whole new game

Try the game Rust, if you have ever played DayZ and liked it you will be a fan. It is like the lovechild of Minecraft and DayZ.

I agree servers can be fun it's a whole new world also play custom maps or build your own! Also you can have fun with the command block jsut type
/give @p command_block and there's a whole new world you can make them do a lot! Look up some fun things to do me and my friends made a ton of fun puzzles. Look at sites like

http://www.planetminecraft.com/...lock-list/

http://minecraft.gamepedia.com/...m/Commands

Oh also check out mods some add new bosses or change gameplay a lot and make it more fun…

Delete your world and play again?