Single use plastics are things like straws, wrappers, bottles and bags that we only use once before we throw them into the garbage. Most single use plastic is used for packaging material. In total, there are six common types of plastic: PET, HDPE, PVC, LDPE, PP and PS. These plastics are labelled with the numbers 1 through 6 on most packages. All types of plastic are used for making single use products.