One paperclip (the bigger the better)
One rubber band
Step 2: Step 2
Here comes the hard part. First, Take your paperclip and bend it out straight. You have to take about an inch of the edge of each side of the paperclip and twirl them into a small circle so it can hold the rubber band.
Step 3: Step 3
Slightly open up the circle you made in the last step to let room for the rubber band. Put the rubber band in the circle and close it up. The paperclip will bend a little bit but if it bends too far you can just bend it back.
Step 4: Ammo
Now to use it you just shoot it like a real bow and arrow. You can shoot just about anything that is small enough with this bow. I find new pencils sharpened once to a point work the best.