Do not pollute your environment by throwing out waste water bottles, because you can use them to design a creative pet house for animals.
Use empty water bottles to design a creative animal shelter, because it is really easy to use bottles to assemble a pet house. You can use a chip board and grooved plastic elements to properly place plastic bottles. The bottles will help you to make the walls of the shelter. To provide better insulation and stability, it will be good to fill the bottles with perlite. If you want to provide light, then use a big plastic bottle on the top to allow light in. For natural touch, you can cover the animal home with soil and vegetation.
Suspend the pet house in trees to provide an attractive shelter for the wild birds. You can also use them in other ways, such as cat condo and carrying cage. Do not forget to give a passage way to birds to easily access the house, and you can hand them in a public park to facilitate wild birds. For more beauty and creativity, you can place small cups in the pet house for water and food for birds.