ProtoXtreme
I wonder what's the answer to the riddle... I was certain Scrouton got it right. O.o But then...Cyborg's worked too...won't there possibly be multiple answers?
No, multiple answers are never in a riddle. In a riddle, there is always a key, and that tells you the one, true answer. Unfortunetly, the key in Cheerios's reddle is hard to find. But there is something that is difrent.
What I have come to think is that the thing one of the sons had to bring is only symbolic. An item for the pocket, yet fills the room... It is phisically out of nature so it is oviously symbolic. (But this is just what i have thought of)