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!
EV Miniatures: Miniature Open Books and Hidden Potion Books, I'm pinning this to crafty; but this is seriously miniature art! -- Why miniature when I could do this with a regular-sized book to use as a prop?