How to make inexpensive dryer balls at home.
#1: Roll up tin foil and throw them into the dryer with wet cloths. Keep reusing until they start to fall apart.
#2: Make balls out of wool or yarn. You can also use old wool sweaters.
#3: Large towels can be thrown into the dryer with the wet clothes to help dry them faster.
#4: Tennis Balls - wrap tennis balls in yarn or wool
Dryer balls naturally cut down on the static without using fabric softener or fabric softener sheets. They also aid in drying the clothes faster as they bounce off the wet clothes.