This is an amalgamation of various ideas that have been steeping in my subconscious lately. It's easy and quick!
Styrofoam egg shape
Cotton or other trim
Double sided tape
Pearl headed pins
Place some strips of double sided tape over egg
(my egg looks beaten up because a certain kitty cat got hold of it!)
Use a straight pin to pin end of trim to top of egg
Wrap trim around egg, sticking it to tape as you go
(Note: I only used the skewer to make it easier for me to take the photos one handed. When wrapping the trim I was holding the egg directly)
With pearl headed pins add buttons in a random fashion all over egg
Cut a piece of ribbon and add to top of egg. First overlap the ends
Then secure with a button and pins
And there you have a cute and simple ornament!