Because I had a lot of white wool and limited amounts of the browns, I wrapped the browns around some white fistfuls to make more brown balls.
I used a small crochet hook to pull the last ends through into the middle of the balls so that there weren't any ends sticking out anywhere.
Strategically, I left the dried, felted pantyhose legs full of balls in a plastic bag until a guest was over and was willing to take the balls out of the pantyhose. There were a lot of ripping noises, and a small pile of shredded pantyhose. To neaten the balls up, I rolled them in my hands individually to tidy the loose wool fibers.
The results? I think I shaved about 10 minutes off of each dryer load's drying time, and I don't remember any static at all. I don't know that they were supposed to eliminate all of the static entirely, but I think they did! I washed a load of whites (with sheets, towels, t-shirts, and a couple of random wash cloths or undies), a load of darks (with jeans), and a load of mixed colours (with some towels included).
The hallway to the laundry room smelled like peppermint all the way to the door, but the laundry just smelled slightly of the oils I put on the dyer balls. The dryer balls still smelled like the oils, though.
The balls were ever so slightly pilled after 3 dryer loads, but that's normal for wool.
So far, I recommend homemade wool dryer balls. (I'll come back to let you know if I find any stray wool fibers in my clean clothes. I'll know they're there, because wool makes me very, very itchy.)
Oh. And I made 39 of them! Well, one was a tiny one, so 38 + 1 runt.