We covered how you can speed up laundry drying times by adding tennis balls but you can create the same effect without the loud noises by turning a skein of wool yarn into three felted wool balls.
Wet Felted Balls Handmade Felt online, Feltmaking in a Washing Machine George Weil online, Making Felt Balls and Pincushions online, HOW TO MAKE DRYER BALLS Step by step tutorial with variations ...