Consider bolstering your iconoclasty with a visit to The 2016 Commonwealth Pen Show, this Sunday at the Somerville Holiday Inn. The focus is on vintage and modern fountain pens, but other pens and writing paraphernalia suitable for collecting are also in abundance. Nathan Tardif, CEO of Noodler's Ink, one of the Bay State's premier makers of fountain pen inks, will be offering some products of historic significance to Massachusetts and sponsoring giveaways for young attendees.