Other upcycling materials We use a lot of different materials to create our upcycling products. Among them you can find extremely surprising raw materials such as bicycle inner tubes, seat belts, cement bags, etc. 5. Wallet made from cement sacks 3. Wash bag made from bicycle inner tubes 1. Bag made from bicycle inner tubes 4. Bag made from seatbelts 3. Backpack made from seatbelts 6. Belly bag made from cement sacks 25