Dave's original Hash-Map fetch modus is cool, but pretty awful to use. You have to go to the trouble of calculating a numerical value for the name of an item, only to find you've already used that number for something else so you have to make up a convoluted synonym for it instead.

Then, to retrieve the object, you have to perform an action or issue a command with the same numerical score. Risk of getting that part wrong in the heat of the moment: high, which is how the crow got impaled on a katana.