With the wring, put one end of the rolled towel on the floor and trap tightly with one foot.
Tightly hold the other end of the towel then start twisting.
Keep twisting until you can twist no more.
Hold tighter and pull hard, keeping the towel tightly wedged between your foot and the floor. Twist some more if you can.
Undignified but does wonders for extracting moisture from the wet washing.
Serfty - This is truly magnificent - much more fun that the hairdryer