Pens look good I would personally use a CA finish on an ink pen. Oil finishes, if the pens get used a lot will also pic up the oils in your hands and stain them over time. Pens are a great way to supplement tools and materials when game calls aren't in season or selling. I've made alot of pens to help build relationships with people that typically wouldn't be buying a game call aswell and that can give excellent word of mouth advertising for you. Once you get down the slim lines start on the bullet pens they sell great especially with antler. Then you cam move onto high end fountains that can sell for a ton.....recently sold a fountain for 200$ So there's diffently $ to
Be made good luck and if you need any help hollar at me!