I don't use a needle. I have one of those long twist ties that came around stereo wire. I made a loop and pulled the ribbon through then treaded the wire from one whole to the next. Some I looped the ribbon over half a toothpick, put the toothpick into the egg hole and gently pulled the ribbon...
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You blow the yolk and the white out through a tiny hole.
https://www.backyardchickens.com/forum/viewtopic.php?id=30726
You can buy things to do it or do it the old fashioned way with lung power.
Lesser made, stamped plastic sells for $5.99 at most any store.
If you can get $7 go for it.
The eggs are not free and neither is the work or supplies to create a 'green' ornament.