This is the kind of thing that we always put off until the next day and that we're finally going to be able to take the time to do. Whether decorative or purely functional, installing shelves requires very little material and gives a lot of satisfaction. If you have a model ready to install, a few nails or screws (often delivered with them) should suffice, as well as a level or a meter to make sure you put them straight. But it is also possible to make it yourself with very little: a few boards of medium, plywood or even why not old skateboards... Simply sanding them with a bit of sandpaper, painting them (brush or bomb) and / or varnishing them before attaching them to the wall with a few squares. As a decoration for installing some trinkets, in a kitchen to store utensils or in the back of a closet to optimize storage, installing shelves is a great way to improve the interior layout.
Difficulty level: 3 / 5
Material: rigid boards + sandpaper + paint + square