This dolly peg butterfly is quick and easy to make, but of course you can decorate the wings as much as you like and clip it up to display it! Instructions below.
You will need:
A wooden clothes peg
Craft foam (or felt, or cardboard)
Paint the peg black and leave to dry (the easiest way is to peg it to the side of a box).
Cut a butterfly shape from foam. Glue the peg to the foam butterfly so it forms the body.
Decorate the butterfly with scraps of foam and other bits from your craft box.