Here's a great idea. From Bill Bryson's highly entertaining THE LIFE AND TIMES OF THE THUNDERBOLT KID (a memoir of his growing up in fifties Des Moines):
Dahl's, our neighborhood supermarket, had a feature of inspired brilliance
called the Kiddie Corral. This was a snug enclusore, built in the style of a
cowboy corral and filled with comic books, where moms could park their kids
while they shopped .... it was filled with comic books. To enter the Kiddie
Corral you climbed onto the top rail and dove in, then swam to the center. You
didn't care how long your mom took shopping beause you had an inifinite supply
of comics to occupy you.