The Loop 

Thread a sharp embroidery needle with a 6" length of yarn. Put the needle through a few threads on opposite sides of the top of the egg. Pull the yarn half way through.

Tie a simple overhand knot 2" away from the egg, forming a loop. Snip the excess yarn.

Embellishments 

At this point you can pretty much do whatever you like to your eggs (draw on them, bead them, etc). I think they look very pretty plain but I decided to add some embroidery on a select few. 

When embroidering on something stuffed you can just hide the beginning and end of the thread in the stuffing!

I cross stitched across the middle of this egg.

And embroidered a simple flower on each side of the pink egg below.

If you need an embroidery refresher click here.

Happy Easter!