Candle of Thought
This appears as a normal candle. When lit and held in one's hand it casts a soft, steady white light, never flickering, even in a breeze (though a strong wind will extinguish it.) When the melting wax from the candle hits a creature's flesh (a painful experience, maybe worth 1 point of damage), forgotten events in that person's past will appear projected on the wall or floor within the area of the candle's light. The person holding the candle can summon up these memories if he is concentrating on them (i.e. - what was that person's name), otherwise they are random. The candle will burn for one hour before used up, with each memory extraction taking 1 minute.