I don't want to sound like the boring preachy douche in this topic, but usually I tell people the same thing; if you are asking other people what you should blow your money on, you shouldn't be spending it.
Save and accumulate it, then when you really want something you'll be glad you have the cash on hand. Its a cliche but its true.
It is frustratingly wasteful seeing kids and teens alike blow money the moment they get handed it. Have some financial responsibility. :c