Upgrades for a 2007 YZ250F?

My parents keep asking me what i want for Christmas, but i have no idea! The thing is, I'm fifteen and i don't really need much, but my parents told me i have to come up with something they can get me. I have a 2007 YZ250F, and it's completely stock except for handguards. Is there anything you can think of that would make my bike better that would make a good gift? Maybe then they'll stop pestering me. Thanks a lot!