Reflection

I had to think carefully about how to "stage" the cheek inflation - I couldn't find any mechanisms (valves, stoppers, etc.) that could keep a bag or balloon partially inflated so the chambered approach seemed reasonable, even though I haven't experimented with it. I realize that if I did prototype this, I would need to make the chipmunk fairly large in order to demonstrate fullness (I imagine that it would be hard to get enough air pressure through smaller air chambers for a person to discern a size difference).