I've made targets from burlap sacks, plastic vapor barrier type sheeting and cotton left over from when they remove the cotton bales from out of the fields.
I would arrange the material as follows packing it as tight as possible with my fists. Looking into the sack from above, in the bottom of sack, I would arrange a center core of cotton, then several layers of sheeting, then a layer of cotton, then several layers of sheeting, until the interior of bag is reached with a plastic layer. The layers look like the rings of a target looking down form above the bag. This allows you to rotate the bag and use all sides as a target face for extended life. Stopped arrows nicely with two finger removal and a burlap sack outer shell was easy to find. It lasted for years.