Menstrual Cup
I switched from tampons to a menstrual cup (&/or period undies) a few years ago and have never looked back.
Way better for the environment and your body, menstrual cups are the ultimate menstrual product. They can take a bit of getting used to, but I promise the learning curve is worth it.
I love the TOM Organic cup as it comes with a microwave steriliser case which I think is genius. No more boiling your cup over the stove!