Have you ever considered wool dryer balls? They are 100% wool and serve several purposes. First, they eliminate the need for chemical-laden dryer sheets. Second, they help with static. While they won't eliminate as much static as a dryer sheet, they will make static more manageable than using nothing. Third, the balls keep clothes tumbling in the dryer, reducing drying time. And fourth, this tumbling action seems to help keep clothes incredibly soft!
I bought mine from Stoney Mountain Farms in North Carolina.