The great thing about drawing or painting a still life is that you are never short of things to choose from. Inanimate objects such as kitchen utensils to ornaments which form no practical use other than just to look pretty, provides the keen artist with an endless supply of things to paint or draw all within reach at any time.
Still life was one of the first subjects in my art lessons at school. It allowed us to practise the fundamentals of drawing and painting within one subject.
Mastery of line and tone enables the artist to reproduce an object and make it look 3D on a 2D surface. Then of course there are other things to tackle, such as texture and colour.