When I was taking drawing classes in college we drew still lifes (or is it still lives? I've never known.) day after day. They would be a collection of objects set up on a table with a light pointed at the assemblage. We would draw, then move and draw from a different angle. Drawing a still life is good practice at expressing shape and volume in a drawing. If you want to draw a still life, just set up a few items—three is good for a start—choosing items of differing sizes, shapes and values. It is good to have them overlapping.
Start by observing the basic shapes. See where the ovals are, the circles, the cylinders, cubes, pyramids, etc. Think of them in terms of three dimensional shapes, not just flat lines around the shape. Start by lightly drawing those shapes, paying attention to where they overlap, what the proportion of each shape is. I like to draw a full oval, for example at the base of the pieces. You get a nice feel for how it sits on the surface when you do that. Imagine more than what you see from your perspective. Imagine the back and the bottom and where the lines go as they disappear around the curve.
I can see some problems with this drawing. The white bowl isn't quite right and the base of it, especially, doesn't seem centered, but I am finished with this drawing. I will know a bit more about what to work on and observe more carefully when I do another.