Do they have any hobbies? like 4H?
My son always asks for belt buckles, oooooo and I got him a necklace from ebay last year..... it's the Kanji for the year of the ram which is the year he was born. Do they have anything like that they would enjoy?
My niece who is that age also is a barrel racer, so I got her barrel racing themed sweatpants.
I always try to go with something I know they are into - even if it's a tshirt of a band they like.