What do you guys do for fun in GTA V? (after completing the storyline)

[Alvas.]

Hey there to any of the old regulars who still happen to be here, and who remember me for one fuckup or the other. : P

Hello to all the new members since then.

 

Just wanted to know what you fellas do in GTA V after having completed the storyline. If this topic gets enough attention, we can build a cool little list of fun things to do and make it a sticky.