Bake cupcakes according to box directions.
Allow to cool.
Using kitchen shears, make cuts around the perimeter of the giant marshmallows.
Sprinkle the cut area with pink sugar to make inside of ears. Repeat until you have 48 ears.
Make diagonal cuts around the ends of the marshmallows to make 24 muzzles for the bunnies.
Cut Easter grass into 3/4" pieces and stick into muzzle to make whiskers.
Cream butter in a large bowl.
Slowly add in the powdered sugar, and milk as needed, until everything is incorporated and frosting is right consistency.
Beat for 5 minutes to make sure it is fluffy.
Ice cupcakes then sprinkle with coconut.
Using icing, "glue" ears and muzzle on cupcake.
Sprinkle exposed icing with coconut.
Press pink "nose" into coconut and icing just above muzzle.
Press mini chocolate chips into coconut and icing just above nose.