I heard a news story on the TV the other evening about the government releasing the Census data from 1940 for public inspection. I went to the website and have had a fascinating journey through both time and my memory. It's all here.
With just a bit of basic information of locations (and if you are really fortunate, street names,) you can find records indicating income, occupation, education, birthplace. etc. of your ancestors and old neighbors from when you were a kid. It really is a lot of fun to recognize some of the old names and make some discoveries that will surprise you. I know I did. Depending on whether it was a rural area at the time or not, name of streets may have changed or not even existed. Regardless, with a little patience and a a lot of determination, you can find info on people from long ago.
It's a more educational way to spend 2 hours than wasting it away on Facebook.