Suggestions for things to do when i cant sleep?

okai, so recently ive found it really hard to ge tto sleep at night, my body clock is messed up so i wake up at like 11pm, but yeah it can get pretty boring at night, and i really really cant sleep, ive tried, after like 2am all the decent TV ends, so all ive got left is pretty much my laptop, i used to just watch anime all night, but ive finished watching all my favourites like bleach, one piece naruto and ouran high school host club, also i play games online like suduko, or a game like bloobs TD. so the point is, can anyone suggest something? last time i asked this a bunch of people said porn....please serious anwsers, im only 14 >.> thanks