We have a nice rack for our spices. We have a box for our tools. We have a pouch for our elements.
We need a keychain. My bag labeled 'Keys' is not good enough. It'd be far more awesome to be able to put a keychain in a bag. And then lose it. Then run around looking for our keychain.
We also need some tanks. I have lots of vapors and bubbles. Why can't I buy a tank to hold them?