3. Select the scale button at the bottom of the screen
Scale the chest along the Y (green) and X (red) axis
Go into edit mode at the bottom of the screen Select the face on the top of the chest Press I and move your mouse, you'll start to see a small boarder around the opening. Press E and move the face down. This is another way to extrude which you did twice with keycahin.
Add a Cylinder. (Shift A) Rotate it so that it is over the chest