ASaw this online, it's a mold you can use to make dragon flies.
http://www.earlcraftncake.com/index.php?main_page=product_info&products_id=253
You can attach the dragon flies using melted chocolate or royal icing and position them on the cake's edges so they look like they are flying :) HTH
AAlso, there are some tutorials online that teach how to make 3D butterflies out of chocolate. You can do this with dragonflies, too. I did it on this cake shown. (although a few pieces snapped off! It was for family, so no biggie, but transport them very carefully!)
[IMG ALT=""]http://cakecentral.com/content/type/61/id/3223448/width/350/height/700[/IMG]
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