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?

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.

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

To create a 3D model of an organ in the digestive system without using play-doh or styrofoam, there are several alternative materials you can consider. Here are a few options:

1. Clay or Modeling Clay: Clay is malleable and easy to shape, making it suitable for creating detailed structures. It can be air-dried or baked for permanence.

2. Paper Mache or Cardboard: You can use layers of paper mache or cardboard to form the basic shape of the organ. This can be combined with other materials for added details.

3. Polymer Clay: Polymer clay is a type of oven-hardening clay that can be molded and then baked for durability. It comes in various colors and can be easily shaped into intricate designs.

4. 3D Printing: If you have access to a 3D printer, you can design and print a model using specific software and materials such as PLA or ABS filament.

5. Foam Sheets: Thin foam sheets can be cut and layered to create a basic structure of the organ. You can then paint or add details using other materials.

6. Recyclable Materials: Utilize recyclable materials like paper, plastic bottles, or foam packaging to build the organ's structure. Shape, cut, and attach them to form the desired model.

Remember, when selecting a material, consider the complexity of the organ's structure, its level of detail, and the desired final appearance.