I had one, still have the oval hoop part. We (he who works & I) have spent the best part of the day looking through all the junk we seem to accumulate in storage shed, garage, spare room and anywhere else we thought it might have been stashed!!
I thought it would be easy, just get online, google search, phone call or car trip, pay money - happy lizzie :o)
But no, can't find one anywhere. I have several size hoops but it's very warm with a quilt on your lap in front of the fire, I keep getting sleepy!