Supporting the local economy and their productions helps a lot in uplifting the society around the area and generates employment for them. This makes them stronger and helps in uplifting the society as a whole. Locally made crafts and souvenirs are not only cheap but purchasing them ensures your contribution to the economy.
Travelers who are eco-sensitive will never buy wildlife products. It's very important to protect the natural habitat and the ongoing cruelty on the animals. So make sure to always buy naturally made products, say no to leather and products which are tested on animals. This way we can make a huge impact on our environment and little steps by each one of us will help in saving it.