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!
Jenny: This is interesting envelope package because it's heart shape normally the envelope it's rectangle or square shape . The good thing is the heart shape also can be a rectangle shape. but when you open it . It is a heart.