50 Year Old Landfills

Thinking that I'd like to upgrade my computer, so I've been looking at these ads. What do people do with yet another printer and yet another set of speakers and .... A lot of stuff must be going into landfills. So I was wondering if any college Anthropology courses go out and dig up landfills that were created 50 years ago. I wonder how well Barbie or Littl' Red Wagons survived. An inventory would be interesting.