Online shopping has increased the reliance on single-use, waterproof plastic satchels, which has created a new challenge for Australia Post - how should it effectively keep these satchels out of landfill? In order to solve this issue, the national mail service partnered with recycling organisation TerraCycle to initiate a free scheme that would allow consumers and businesses to return used plastic mailbags to be re-used and recycled into plastic park benches, chairs and other industrial items.