Stacking Rings have been around
for several decades. The earliest I can find pictures of them goes back to the 1950s. Up until the 1970s, Stackable Rings were wooden. Starting in the 1980s, the rings
were then made of plastic. The rings come in a variety of solid colors or even patterns. There are usually five (or more, sometimes less) rings that slide over a rod pole (that can be flexible or not). This is not a very exciting toy, but I don’t know a single person who didn’t have one as an infant or has never seen this toy. The Stacking Ring toy is truly a childhood staple.