As someone who doesn’t generally use a ballpoint, I found the mechanical pen to be the most pleasing item in the collection. MacLaine, a former Dyson product innovator with the Airwrap styler and Airblade Wash+Dry tap to his name, enthuses about the design elements: a textured barrel with a wider diameter than a standard ballpoint (“less fatigue when you’re writing for long periods”); a fraction of extra weight (“to remind you to take a little more time with your writing”); and a retractable twisting mechanism that can be activated with one hand. “It’s an incredibly simple product, but one that offers us more opportunity to get into the details, right down to micron level.”