Flatten the bag completely with the seam side down. Fold it in half from left to right so the two open-bag sides are aligned: you now have four layers of black paper in a roughly square block.

On the top layer, draw one bat wing profile with a pencil: a curved top edge with two or three points, and a curved lower edge sweeping down and inward to a central point that will become the body. The body centre sits at the fold line.

An adult cuts through all four layers at once along the drawn line. Do not cut along the fold. When you open out the folded cut piece, you have a symmetrical double-winged bat.

The bag lining gives the bat a natural body thickness. Press it flat and fold the wing tips slightly upward for a more three-dimensional look.

Add two small white gel-pen dots for eyes near the top centre of the body if you want. They are tiny but make the bat look alive rather than flat.

Pierce a small hole at the top of the body with a pencil tip and thread the black thread through it. Tie a knot at the end to stop it pulling through. Hang at varying heights from a curtain rail, ceiling or doorframe.