Well I did get some good answers...but I'm still stuck- can anyone help?

People gave me some awesome ideas but I still feel like none of them jumped out...and ps i am still on a budget here so an ipod or game system like nintendo wii is kind of pushing it...and yes i know its the thought that counts but i have done so many little things for him on random occasions like scrapbook, pic frames, keychains etc that i dont want to get that for him on xmas. and yea i know he sounds like a nerd bu thes really nothing close to one except for the fact that he is extremely smart and involved. but you dont have to be a nerd to be smart! and i feel like if i get him tickets to a bball game its a lot like last year when i got him queen tickets. well i have 5 days and i still dont know. im screwed.