I'm not sure if a lot of people do this, but I refill my ink pens instead of throwing them away and buying new ones. I'm not sure that it makes a difference for the environment. It doesn't make a huge difference in my finances. I'm not really sure why I do it. It's not like I'm making a statement or I really believe in it. I just do.
It might be because when I find a pen I like, I tend to hold on to it. Maybe it is because of my affinity for office supplies. Maybe it's because I like the challenge of actually being able to use all of the ink from a pen before it breaks or I lose it. Maybe it's just because I'm weird.
See how the pink pen is very nearly out of ink? I'm prepared with a refill. I'm not a serial ink pen refiller. These are the only types of pens I refill, and I've been refilling the same ones for years. Both the pink pen and the blue pen are from 2004. The pink one is a Pentel and the blue one is a Dr. Grip. I don't even think they make the blue one anymore. I haven't seen it around lately anyway... you know what else?
I liked it so much that I bought the matching mechanical pencil, which I also keep refilling, but I don't think that's as uncommon.