The Bifyrd and Feron Adventures (by Brian McNeilly) is a nifty little set of adventures. Its written for the HarnWorld game which does mean doing some conversion. But its fairly generic, so the conversion is not too hard. I ran it using Iron Gauntlets by Precis Intermedia Games.
The adventure provides a details of the local area and characters and a series of 4 adventures. Its a little dark, in the way that the old fairy tales are dark. But its not a gory adventure. On of the characters in my game was a teenaged boy. I think it would work well with young children.