Hi. Here is a link to a previous discussion. Hope it helps!
http://www.cakecentral.com/cake-decorating-ftopict-53775-ornaments.html
I read on a thread somewhere that people were using clear plastic hollow ornaments from the craft store. The ones that are in two halves that snap together and you can put candy or tinsel or things inside to decorate them.
I'm pretty sure these are the ones they used. At least you can get an idea...
http://www.joann.com/catalog.jhtml?CATID=82447&PRODID=10809&source=search
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