It's already here!
It's sold under the name "Through Dough".
It is used as a teaching tool to help novices learn how to through/spin the dough without going through hundreds of dough balls, it is also used as a practice tool by those who practice pizza acrobatics.
Kinda chewy though.
Tom Lehmann/The Dough Doctor
I'm not sure whether that's the one endorsed by Tony Gemignani or if it's the one endorsed by Chris Green, but the one I got from Chris melted my VCR's remote control. Don't ask me how it happened, but there are blobs of melted gray plastic on my fake dough. Not a big deal to me, though, because I never really needed or used the dough. (Conversely, the remote control was once pretty handy.)