Microsoft Surface Pro 4 (SP4) pen holder

The pen-retention magnets on the Microsoft SP4 are cute, but not really sufficient to keep the pen from falling off everywhere. I wanted a way to more-securely hold the pen and feel confident I'd still have it after leaving the coffee shop.

It's simple. It holds the pen pretty securely. I used a 0.1 mm thick acrylic double sided tape to attach the tabs to my tablet.