Legend of Zelda Skyward Sword
Prof Leyton 4
Mad Map of Hyrule poster (60 quid to import from the States)
Gundam 00 box set
Secret History of the Mongols
Ancient Warfare mag subscription
New Scientist subscription
Nat Geo subscription
some anime dvds
some books
To be fair, my teens are quite unusual 
and don't like a lot of things that other boys that age would want.