I'd love to say I have my old ColecoVision tucked in a closet, but thats a lie...
Most of my old systems and games have been donated long ago.
The oldest I have in hardcopy form is probably X-Com (UFO Enemy Unknown). Kinda sad really. I should have my AtariXE somewhere, but I think it got tossed during the last "shakedown". My wife is a hardcore organization freak and eliminates whatever is unused.