Hard-boil the eggs by placing them in a pot of cold water and bringing it to a boil.

Once cooled, peel the eggs and slice them in half lengthwise.

Scoop out the yolks into a mixing bowl and mash them with mayonnaise, Dijon mustard, salt, and pepper.

Fold in chopped chives for added flavor and color.

Fill the egg white halves generously with the yolk mixture.

Arrange the filled eggs on a platter to form a tree shape using edible decorations.

Garnish with extra chives or other herbs for decoration.