NES and Duck Hunt trumps even Gears or Halo for the 360 IMHO.
Anyone remember Pogs? I won a tournament at Camp Belwood one year... got me some tournament box set thing, had a stage table thing to play on and a bunch of "special" pogs... I used to love those things. And Marbles... never got huge into the Pokemon cards, though I had one of the games for the original Game Boy... I think it was Pokemon Blue or something... my little brother has a bunch of that stuff from when he was younger.
"War must be, while we defend our lives against a destroyer who would devour all; but I do not love the bright sword for its sharpness, nor the arrow for its swiftness, nor the warrior for his glory. I love only that which they defend: the city of the Men of Numenor, and I would have her loved for her memory, her ancientry, her beauty, and her present wisdom. Not feared, save as men may fear the dignity of a man, old and wise." - J.R.R. Tolkien