You can use any shape. It doesn't have to be a bunny. Just trace a shape or cookie cutter. This would be cute for any holiday, just use an appropriate cookie cutter to trace and cut out the shape, then whatever yarn works best for that holiday!
25 DIY Christmas Crafts for Kids to Make Brilliant DIY Pine Cone Trees, I love this idea for a Christmas village! Plus, 25 DIY Holiday Decorations and Kids Crafts. Need great ideas concerning arts and crafts?