Before we start, let's grab some inspirational reference images to built our gum ball machine. I went to stock.xchng and pick some images that can help us with the part we need to build. Here are the links: Image 1, Image 2 and Image 3.
Let's get started. Draw a shape like you see in the image below and fill it with a red color. I set up the document with CMYK colors. To have a symmetrical shape, I drew half of the shape with the Pen Tool (P), and then mirrored it and joined the shapes. This will be our base shape.
Create a duplicate of the shape and fill it with a linear gradient (black/red).