Stumbled onto cockeyed.com, where you can find wacky photos. Such as those in the How much is inside category.
Indeed, how much can you fit into a can of shaving cream? Can you really fit a million dollars into a suitcase just like you see in movies? How can you easily dry out wet laundry? How absorbant are tampons?
This is the kind of science experiment that teachers should encourage their students to do, to encourage creativity and curiosity in them. But I don't think their mums will be happy having their household items abused in the name of science.