i need to make a 3D model of an organ in the digestive system besides the esophagus. I cant use play-doh or styrofoam. What other things can I use?

Answer 1

I suggest you study a good diagram of the digestive system. What do the intestines or stomach or liver remind you of? For instance, the stomach reminds me of a partly inflated balloon and the intestines remind me of snakes or worms.

Then go to a craft or hardware store and wander around until you see something that resembles part of the digestive system.

Answer 2

Also remember that digestion begins in the mouth. So you could focus on this as well.