Anything else to do after beating X/Y?

You know: short of going to Kiloude City? Yea there's a Friend Safari & Battle Mansion there but both are kind of boring after a while.

I mean I guess I could go & challenge the elite four & the champ again. But I just get to see the ending again & that accomplishes nothing. So... Is there anything else to do in X/Y after beating the game?

Personally I don't really want to do anything now after having beaten Pokemon Y. But, here's a few ideas:

- Catch more Pokemon
- Get all of the Mega Stones/Mega Evolutions
- Looker Detective Agency, which I haven't even tried myself, but I'm assuming it's fun or whatever
- Go to areas you may have skipped over while playing

Just a few things I thought of from the top of my head, I'm sure there are others as well.

- There's a few Mega stones that you can only only get in the after game.
- There's also a few Legendary Pokemon that you can catch.
- Lastly there's the side story Looker Detective Agency Zero said.

There's not much to do unlike past games. Hopefully there's lots of things to do in the after game for Pokemon Z.

I completely spaced on the fact that I can catch legendaries: lol. I had no idea about the looker agency side quest thing though: so I'll try doing it!

Thanks for helping me out Zero & Gameguy. ^^V