stick or bamboo (Arm length), thin card, plasticine, piece of string.
Using a penknife or hacksaw
cut 2 slits in the top of the stick, effectively slicing the wood into 4
sections (Like the flights end of a dart). Cut 2 pieces of card into flight
shapes and cut a slit half way through the middle. Push the two flights
together and slide them into the slits at the end of the wood. You have
basically made a large wooden dart. Put some tape or string around the end
of the wood to prevent the flights falling out. Whittle or saw a groove
around the wood just below the flight. Put some Plasticine on the front
of the dart to weight it. Tie a single granny knot in one end of the string
and wrap the other around your hand. Tie the string to the back of the arrow
as shown. Keeping the string tight hold the front of the arrow. Throw the
dart like a Javelin. The technique takes some mastering but once you've
got it, the dart will go very far because of the slinging effect of the
string. Be very careful only to throw it into a clear safe area. Always
cut away from you when using a knife. Use the green 'Jello' buttons to pause the animation.