The Third Sunday of Lent in the Orthodox Church is the Adoration of the Holy Cross. We decorated our own Russian style crosses with markers and pretty paper scraps.
I drew a blank Russian style three bar cross on card stock and then let the kids decorate their how they liked.
I gave them markers, scissors, glue sticks and some pretty origami paper I had left over from a Japanese wabi-sabi collage project.
I wrote the Troparion of the Cross on the bottom of the pages.
O Lord, save Thy people, and bless Thine inheritance;
Grant victories to the Orthodox Christians over their adversaries
And by the virtue of the Cross, protect Thy habitation!