7. Pillow
A sleep tool. It is a filler that people use for sleep comfort. According to modern medical research, the spine of the human body is a straight line when viewed from the front, but a curve with four physiological curves when viewed from the side. In order to protect the normal physiological curvature of the neck and maintain normal physiological activities during sleep, pillows must be used when sleeping. Pillow is generally composed of pillow core and pillowcase.