"Caltrops" - A caltrop (calthrop, jack rock, star nail or crow's foot) is a weapon made up of two (or more) sharp nails or spines arranged in such a manner that one of them always points upward from a stable base (for example, a tetrahedron). Caltrops serve to slow down the advance of horses, war elephants, and human troops. It was said to be particularly effective against the soft feet of camels. In more modern times, caltrops are used against wheeled vehicles with pneumatic tires. In Japan such devices were known as makibishi.
Gotta Get them camels!
Step 1: Materials
Actually the size doesn't matter but I like this size.
Or if you are using thicker metal use tin snips
Step 2: Cutting 1
Cut 2 lines length wize from each end about 1/3 of the way (see picture)
Step 3: Cutting 2
Cut from the... just look at the picture
You want the final out come to look like a squished hour glass
Step 4: Bend
If you got thin metal from a pop can or what have you then you can just bend it with your fingers.
Postition the metal so the hour
Step 5: HURT PEOPLE!
If you made it with thin metal it will probly only hurt people with no shoes but if its thick you'll be ripping TROUGH CAMEL FEET!