Metalix RPG has a bevy of such items to discover, ranging from lights you can fire magic-wand-style at enemies, to EMP devices that shut down all the conveniently electronic enemies in the room at once. Most items come with a helpful description, and the fairly common "identification device...
It also means our average level is pretty low -- right around 2~3 with an average CR of about 1/2 per person in the village, highest level caster is the priest at level 4, with the butler's wife being second at level 3... which also means we have 2% of the population as caste...