Well for starters you going to need probably that clear plastic tubing for the esophogas and intestine and you can let gravity do its do there. You can hang the whole "unit" on a stick post thing. Here’s an idea you can put a ball as the "food" and once it reaches the stomach, a fan will be blowing it out, it would work if it was a foam ball.

Hmm… Let’s see what else…. ❓ 😕 ❓ Im not really sure… What kind of teacher would assign this and when is it due?