I've tried vinegar and it doesn't work for me...it might depends on your water or other variables on how well it works for one person or another.
I use dryer sheets and usually it's Bounce, just because it's the fragrance I find least offensive and what works for me. I also cut them in half. Less smell and it takes away the static.
I know a few people that do a method with liquid softener. They soak a regular washcloth with it. Let it dry and then toss it in with the load of laundry in the dryer. Supposedly that works really well and the washcloth soaked in softener lasts for more than 10 loads. I'll see if I can find a recipe online.