[OctoberDream]

The only thing I can think of that might work, is an old gel bike seat. It's about the right size and should move ok. you would just have to paint it.
I am sure you can find one at a yard sale or junk yard with out too much trouble.
No worries if you dont like the idea. Just thinking out loud.

 

[xxScorpion64xx]

Along OD train of thought, how bout Jello? Of course several batches through the night, no problem if you don't like mine either

 

[mikey23]

How about Dapper Cadaver? They got stuff like that

 

[medusa]

Thanks guys

 

[Vandalay Industries]

I actually used actual liver that I bought from the grocery store although I just carried it around instead of having it dangle from my mouth. Real is pretty awesome as people had a tendency to touch it then that grossed them out more !!!