Pens & Markers Put in Garbage Cart/Bin Ways to Reduce Purchase the Refillable, Eco-Friendly Marker Set If you are annoyed with disposable, single-use writing utensils, look into finding a reusable set of pens. Check out this list of eco-friendly writing utensils. Refill Your Pens Instead of throwing out your pens every time they run dry, purchase pen refills, which you can easily find at an office supply store. If your favorite pen is on this list, it can be re-filled! Did You Know? Eco-Friendly Pens While sadly, a truly recyclable pen doesn’t seem to have been created yet, some pens are more eco-friendly than others. Paper Mate, for instance, developed a line of biodegradable pens and pencils that will break down in soil or a home compost pile in a year.