These torn paper tree cards. You could use photocopied pages of a Christmas story or Christmas carol sheet music.
3D Illustrations by Eiko Ojala
"Vertical Landscape" by Eiko Ojala. It looks like a paper landscape but the artist actually works digitally and hand-draws all the elements to look like they're cut out of people. (Hint: the shadows help!
Surprise Egg With Chick Happy Easter / Happy Spring card! By atiliay osterei Osterkarte