Hula Hoops!  They are everywhere.  I remember when I played with one and I remember when Megan played with one and now our neighbor kids who are in the 8-9 year old range are playing with them.  Fun!

                                       

The hollow plastic circle that launched a dizzying pop-culture craze marks 50 years today, the day its inventors sought the Hula Hoop trademark.

Richard Knerr and Arthur "Spud" Melin based their creation on a similar toy that Australian school children seemed to enjoy. Within a year, their Wham-O company had sold more than 100 million Hula Hoops ($1.98 each) — more than one hoop for every two Americans.

The rest is history. There's even a magazine dedicated to hooping.