that is a film cansiter....when you say pop bottle are you refering to the flying film canister (vineger, plus Baking soda wrapped in a paper towel, drop the Baking soda into the vinegar in the film canister, close it quickly and set it upright and watch it shoot upwards)? Or is it just on there for show?
If you want a pop bottle rocket, try mentos and diet coke.
Out of Sport. Have Fun!