[obligatory plug for the Diva Cup.] seriously, if you're using the applicator-free tampons, you're 75% of the way there. & also, IT WILL CHANGE YOUR LIFE.
By sox on The o.b. Tampocalypse
Naturacare and some other 'green' brand make the exact same thing in unbleached cotton (Uh, you shouldn't be putting chlorine bleached things there anyway) and you can find at any natural grocer for like $5 per box of 20. I mean seriously. Go get em!