I wasn't sure what they're holding. Innertube? Pet toy?

Well, early 19th century small boys used to bowl hoops, running along propelling them with a cane, which shows the fierce excitement available back then; but I'm going with doughnuts.

Claverhouse said:

Well, early 19th century small boys used to bowl hoops, running along propelling them with a cane, which shows the fierce excitement available back then; but I'm going with doughnuts.

I laughed more than I should have.

Blue_Trident said:

I wasn't sure what they're holding. Innertube? Pet toy?

Bathing rings?