Bring in a carry-on bag...?

well im going to mexico soon and i over pack alot on my carry-on. I learned the hard way and when i went to vegas i brung nothing. And the guy i went with slept the whole time! i was sooo bored. Im taking my ipod, labtop(only cuz i dont trust it in my bag). take something that will keep u busy for the long trip. def. books and magazines even crosswords or word finds. Also mayb some electronic game. def. bring candies. idk what else im sorry. lol =]