All it takes: a circle cutout of stiff cardstock, tail feathers and an orange beak, some googly eyes, and tissue paper scraps.
Here's a closeup of our tail feathers:
Fold the circle in half. Attach the tail feathers, eyes, and beak with glue. Crumple up tissue paper and add them to the robin's breast. I used traditional-ish robin colors, but any colors can be used.
Time to rock your robin!