The best way to make your room lively is to adorn your room with plants. Some people are not very enthusiastic about keeping plants inside their room because it emits carbon dioxide and carbon monoxide at night. But the amount of carbon dioxide emitted at night is very less and it is not harmful in any way to humans. The one thing which we have to wary about is carbon monoxide because it is dodgy for humans. There are some plants which actually benefit you if you sleep with them because they emit oxygen.