Milkmen.
While-you-wait tire retreads.
Engine oil dispensed in bulk into your own five-gallon container by the hardware department of your local Sears store, and then when you changed oil at home you poured from your container into a glass oil dispenser jar with a conical top.
Nashes. Packards. Crosleys. And so many more.
Standing with your feet in the X-ray machine after you bought shoes so your mother could see you had room for your toes to grow in the next six months.
My parents let my brothers and me buy our first .22 (a Winchester 67 single shot) from the owner of a toy store they knew, and we bought ammunition from him too -- 73 cents a box for long rifle.
You still got zinc pennies and Indian head cents in change, and a penny WAS change rather than an annoyance, because you could actually buy things with two or three of them.
Navajo and PIE trucks in the southwest with big "Explosives" signs on their sides.
And yes, Whiting Bros. gas at 16.9 a gallon.