We have all, at some time , wondered were all the material stuff in our mind comes . The mind is part of the subtle body, along with intelligence and the false ego. All of our sensory experiences are imprinted onto the mind. This includes everything we hear, touch, smell , taste and see. The mind is also where our material desires are stored. The things l like to eat , the music l prefer, etc. Above the activities of the mind is the self ( the jiva atma ) who is the viewer of these activities. Learning to transcend the mind is an important teaching in yoga scriptures.
Find Part 1 here: https://youtu.be/XIVL3cv2l6o
Part 3: https://youtu.be/hu8ykaZrgIQ