Wrap raw egg in stocking with bit of plant arranged snugly against the egg and fasten. You can use rubber bands or tie them like I did.
Next put all the onion skins and wrapped eggs (and plain if you like them that way) in a pot with a tablespoon of white vinegar. Then hard boil the eggs. I brought mine to a boil slowly then simmered for ten minutes and let them cool in the pan. Then I rinsed and dried them and coated them with just a touch of vegetable oil.
My mom happened to call when I was working on these and told me that her grandmother, Julia Lachmayer, used to bring mom and her brothers and sister eggs that had been dyed this way for Easter. It was a new bit of family knowledge for me, as I learned to make these years ago from a magazine article. I like these better than the gaudy, glittery sort that are more usual and start saving onion skins along about Christmas to make them. It is unfortunate that the selection of plant material for decoration is just a tad sparse at this time of year in the Great Northeast though