Weapons of any kind are a boon (especially if they are not sticking out of you). I'll second the DVDs. Software is also worth quite a bit these days (see adobe products). But my personal favorite these days are video cards. I have quite a collection of ATI X850XTs as well as NVIDIA 6800 Ultras. Not quite as soft as a pile of gold coins, mind you, but the overall effect is much more interesting...