Ukrainian Easter eggs (Pysanky) are probably the best known in the U.S. of the fancy decorated Easter eggs. I have postcards of decorated Easter eggs from several countries, but the only Ukrainian egg cards that I have are actually from the U. S.
The first two cards are from the Ukrainian Gift shop of Minneapolis. The third card shows eggs decorated by Lorrie Popow of Arkansas.
The YouTube video shows Ukrainian Pysanka postcards (the link works but wouldn't embed here).