On a quick web search, I see this:
- plastic spinning plate set $7.30 at Mansion Athletics http://www.mansionathletics.com/spinning-plates-w14356-juggling.html?channelid=Google%20ProductsPM&gclid=CL7x64Xa37ACFQgUKgodwz1J0A
- plastic spinning plates $6 at Serious juggling http://www.seriousjuggling.com/spinning-plates.htm
Spinning plates are an easy trick to get started with, and for building confidence. For me, learning a trick is about understanding what I'm trying to do and seeing it as something possible.
Here's a good page of instructions on how to spin plates:
(I just did a library show and found myself recommending spinning plates again, so I thought it would be good to update the information here about how to get them.)