I was always fascinated by how fast and effortlessly? the checkout person could key in prices on the mechanical cash registers of the day. Many supermarkets had great magazine stands, and many had lunch counters. Those have come back a little around here, especially at the regional Wegman's...
Breck Shampoo. Appliance dealers giving a dozen or so small boxes of Tide with a new machine. AND best of all for me- the commercials and their jingles. They were actually FUN to watch and sing along with.