While I'm at it, here's another major issue I know you're thinking about: Why can't there be some kind of cool everyday off-the-shelf container that can also be used as a water pump, air pump, or a cheap splash weapon?
WHY CAN'T WE HAVE IT ALL?
Now you can actually have it all with my new pre-Kickstarted innovation, "Archimedes Greek Yogurt". The yogurt comes in a much more sturdy plastic or vegetable resin container that sports a single groove running around and down the side of the container. It resembles a screw.
When you're done with your delicious Greek yogurt, you simply scrape your spoon at a 45 degree angle along the inside channel of the container all the way to the bottom. All the yogurt rescued in one 15 second activity.
The container is then much cleaner for rinsing as well, which you'll need to do when you will be re-using it as a stomp rocket foot pump. Or a cheap accordion. Or an Edison Phonograph Cylinder. Or an Archimedes screw. Or a water container. You can also recycle it. Whatever you want. Booyakashah, and thank you.