1. Polyethylene - Basically plastic bags and wrappings. The stuff that is killing the ocean on earth.
2. Polyester - Basically water and wind-resistant stuff. It's the stuff that makes up things like raincoats and the like.
3. Acrylics - Two-fold utility. The first is the aesthetic stuff like acrylic paint, nails, and LCD screens and the second is adhesives like the almighty super-glue among others.
4. Polyvinyl Chloride (PVC) - One of the core building materials in the world. It is used for pipes, for sliding doors and windowsills, and even IV tubes for hospitals.
5. Polypropylene (PP) - One of the most household rubbers. It is what is commonly sued to make thermoplastics. This covers a wide range of uses, but a simple one every knew were microwaveable plastic bowls/tupperware.
6. Rubber - This one needs no explanation.