Every day, I see that a lot of people who drink from plastic water bottles  throw the bottle away and at once they  buy another bottle of water, instead of reusing and fill it with water. Or I see a lot of people throwing away sheets of paper used only on a side, instead of reusing the paper on the other side to take, for example, notes or to do exercices.
Surfing the Internet, I discovered that we can reuse and recycle more things than I was expecting, in many ways, to help the environment. These are some examples:
1. We can recycle items with creativity, for example reuse a bottle of water or alluminium tins like a container for pencils, or reuse glass jars as small containers.
2. Using Newspaper, cardboard and bubble wrap to packing material. (http://www.recycling-guide.org.uk/reuse.html)
3. Reuse paper bags as school book covers,  as gift bags, as containers, to keep bread fresh or to ripen fruit.
4. Reuse old food scraps like fertilizer. Plants will grow better.
5. Donate unwanted clothing

There are more ways to reuse things, so instead of throwing them away, we  can help the environment, because doing this, the emissions of CO2 would decrease. I think it's a good thing to do. At the beginning it would be a little bit difficult, but then it  becomes a habit. Furthermore it's easy, because It doesn't require many efforts

reusing paper bags from the store is an easy way to reuse something

Using reusable containers for lunch boxes and a reusable lunch box would be helpful too. I do this at home and it does not take much effort

bringing cloth bags with you to the store is super easy and helpful