They're baby's toys made by a wizard. They have elven runes on them, and if you put them next to each so that it spells a valid elven word, they glow green. If you put them next to each other and they don't spell anything, they glow red. The wizard and his family travelled all over the place and the little rugrat was fond of tossing his toys out of the carriage, so they're scattered everywhere. If they can find enough of them, and return them to the wizard, there might be a reward...