I love my BF2142 T-Shirt, the memory stick dogtag but also the normal dogtag i got at the community day
A good sturdy box for the game with a few extras in it wouldnt hurt the game sales IMHO.
I would like to have some sort of poster to put up on the wall. The levels and environments always struck me as pretty damn neat when you look at the distance. A nice picture of that wouldnt come amiss.