A very simple slingshot that is best used shooting people ;) (co-workers perhaps)
Step 1: Supplies
To make this, all you will need is: Scissors,An elastic (has to be fairly strong), A piece of scrap cardboard-like material (I used an empty pack of gum), A pencil, pen, etc. (optional)
Empty your pack of gum (or get an empty one from the start), and take that or whatever you decided to use. Now take the scissors and cut a rectangle out of it (size depends on the size of the elastic). Then punch two holes in the sides. You should have something like the picture.
Now take the elastic and push one end of it through one of the holes (you may need a pencil to get it through), then out the other hole. Pull both sides of the elastic so that it is tight against the back of the rectangle.
Put your fingers in the loops of the elastics, spread them in a V, put your projectile on the rectangle, and you have a slingshot!