AVSnap provides an easy way to create random filled shapes using the Cable tool.

Step 1: Select the Cable tool and draw a diagonal line.

Step 2: Double click on the line to create a Bend point and stretch it to the left. Make sure the Draw Assist tool is disabled; otherwise the Bend points will snap at 90 degrees.

Step 3: Continue adding snap points until desired shape is achieved. Adjust the line weight and use the Round tools to increase line thickness and make corners round.

Step 4: Select fill color by clicking on Fill button and choose the color you like.

Step 5: With the mouse, right click on the fill button to enable shape fill.