One of the best ways to reduce the creation of new plastic for fountain pens is to use vintage pens, not only are you reducing the amount of new plastic needed for your writing instrument, but also the potential for these "old pens" of being thrown into the waste stream. Rubber sacs, pistons, and seals are common for repairs, but are generally far less impactful than a whole pen, and generally will last for a number of years.
Glass ink bottles are able to be recycled perpetually, and would be best choice in that regards. They are heavier, so may use more resources to travel to you based on weight, but depending on on recycled content, and the manufacturing process may still produce less emissions, and use less energy and resources than raw plastic production. Buying ink as close to you as possible, or directly from the supplier can reduce the amount of resources used to get it to you. If you really like a certain ink, buying it in the largest bottle possible is best. Samples help reduce collecting bottles of unused inks, and the potential of people dumping these inks down the sink, or tossing them into the waste stream.
Pens with large ink capacities, and fine to extra fine nibs with restrained flows (no firehouse extra fines, if there are any!) will take the longest to empty, and get the most writing per fill. A very dry medium nibbed pen may have a chance as well, but probably not as great as a finer tipped pen.
Whenever there is a question about ballpoint pens on FPN, I am never able to answer as I have not used one since 2007 for much more than a quick signature at a restaurant or store, and generally don't pay attention to what pen is provided. I agree that office supply stores should have pen recycling programs, but many of them appear to be struggling to stay afloat, so probably are distracted a little in that regard! It would be nice if manufacturers used recyclable components throughout, but all plastic barrels and caps should be able to be recycled, its when metal parts get thrown into the mix that complicates things a little.
Edited by JakobS, 20 February 2018 - 15:11.
FP Ink Orphanage-Is an ink not working with your pens, not the color you're looking for, is never to see the light of day again?!! If this is you, and the ink is in fine condition otherwise, don't dump it down the sink, or throw it into the trash, send it to me (payment can be negotiated), and I will provide it a nice safe home with love, and a decent meal of paper! Please PM me!For Sale: TBA