The parts of the forest that you use to decorate the presents can be used afterwards for Christmas decoration inside the house and you do not need to buy more decorations!
You can use the branches directly on the box if it arrived with the post and has a natural brown color.

Or you can use a bit of newspaper and you do not have to buy and use colored paper for gifts.

Not only you do not buy paper for gifts but you get to re-use your newspaper, give the person that the gift is destined extra Christmas decoration AND you get to go to the forest for a walk!!!