Depending upon how old your neice is, and if she wouldn't make you "prove" it, you can always do the old sneaky trip out to the hen house, put a watered down elmer's glue on the egg and then sprinkle with glitter. If she is young enough, that would send her into spasms of delight. UNTIL she went and told her teacher or someone who wants to know the whole story . . . then its a whole nother' story!!!!