My 15 year old daughter:
She hasn't added any big ticket items (yet)?
She mostly has cosmetics, hair care items, lotions and perfume listed so far. Oh..... and of course clothes.
My 13 year old son:
Halo 3 ODST for xbox, Call of Duty MW2 for xbox, 1 year xbox gold card, xbox wireless controller, microsoft points and the new ipod.
My 10 year old son:
Legos, remote contol police car and pc games.
My hubby and I are not exchanging this year, so no lists for us.