A world at the mercy of a mad Solar Deity
Created by the god of madness, one must be at least a little insane to be able to use them. These tools cause much confusion to those that see them in action and are guaranteed to cause misunderstandings.
Plant that is likely to produce allergic reactions in almost everybody, even by touch. Usage: medicinal, in very exotic foods, non-lethal traps, disabling opponents (have you ever cut an onion,anyway?), spell components, etc.