I believe Diana means ring stakes the below URL shows a picture of them
and
it was just the first one I found to show pictures. Note it clips to the
pot. (next to last on page)
http://www.orchidmix.com/cat8.htm

Exactly right! Best used when repotting, but it's possible to slide them
over existing plantings in most cases.

Reka, the fingers - thanks for asking. I'm not sure you want to know the
answer, though!

Diana