The jagged edges of certain fish shapes are perfect for making silhouettes.
As an April Fool's Day hoax in France, children stick paper fish on loved-ones' backs.
For a year-round fish, you can also make the mini chalkboard pictured here.
On a 34x30 cm (1 ft 1½ in by 1 ft) piece of heavy-duty cardboard, apply two coats of chalkboard paint (available in green and black).
Print out the two pieces of the fish model on "A4" format paper. Cut out the shapes and tape them together.
When the chalkboard paint is dry, center the fish on the painted surface.
Stick pieces of masking tape around the outer edges to roughly outline the fish shape.

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