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That's too bad the egg broke.  Are you familiar with the Ukarainian decorated Easter eggs called Pysanki?  Not sure if I have any spelling right in that last sentence.  Years ago, I read that they need to be full while they decorate them.  (Not blown out).  They decorate and let them sit...and the insides dry up and make a little bead inside that you can hear when you shake.  
Now I would have thought that it would be a nasty smelling rotten egg---but I did that with some decorated eggs---and indeed, no smell, dried up insides.  (maybe do some googling on this)
Perhaps your other tiny egg, and any future ones, you could just let dry up.   That way they would be preserved, and you wouldn't have to worry about breaking the tiny shells.