Every day we can see things that are considered as an art. In the home where there are decorations and works of arts to outside where there are many things that you could see. Art is not limited and it could also depend on one person on what is considered as an art in his own point of view. Even if there is a definition, there is the different interpretation. That is why you can see experts in arts giving the different side of the topic.
That is why you can consider your DIY project to be an art or the printing int your t-shirt that you have made. Now art could be expressed in many different ways. That is why if you want to see an artwork, you do not need to go to the museums as you can see many types of your environment and the places that you were going. In some areas, they have the street arts that they say. They are the graffiti that are painted in different places.
It could also be an art what is the color combination and the things you have displayed in your home. This is just illustration that the art is applied to many things and it could be big or small. Now we can see them everywhere even in the clothes we wear and in the souvenirs we are buying. But if you want also to see professional artworks then you can go to museums and libraries.