I've built a connect four game in creative. I'll be making it on a server soon. I'm also in the process of building a working clock tower.
Schools are SO strict when it comes to that stuff. My teacher gave me an F on an essay because "One of the Ls looked like a gun".
So, I looked it up and... You can add a mod (unlike the ones from the comments above) with herobrine.
Supposedly in this mod you will find random mine shafts that aren't like villagers. If you wander tthrough these mine shafts your supposed to see herobrine holding a pickaxe in them.
I don't really know if this is true, I just searched 'minecraft herobrine' on google and clicked on the one entitled 'Herobrine Minecraft Wiki' Look it up!