Well I have two suggestions but not sure of your price range.
1. Ipod shuffle (or some sort of Ipod)
2. Digital camera
My cousin (10 yrs old) got the shuffle for her bday and the my family (me, mom, sis) are getting her the digi cam (maybe the 89.99 easy share from target).
Her brother who is 9 is also asking for an Ipod for xmas. HTH