Installing a hammock chair is probably the quickest way to make a room a lot cozier. It gives off a relaxing ambiance that makes you wan to sit back and unwind, and forget all about the tasks needed to be done for the day.
Before you can enjoy this kind of feeling, you need to have a hammock chair first. You can buy this online, or better yet, make your own. If you choose the latter, which is obviously the more practical option, you can learn how to make a hammock chair from this post by Makezine.