$2
After many months of testing and prototyping I've finally figured out how to turn the Rookie Wallet into a slim and minimalist notebook/wallet. This silicone band wraps around the edge of the rookie and keeps it closed while also holding a Fisher Stowaway Pen.
You won't find a smaller more compact notebook/wallet/pen design out there. It's taken me months to settle on this design and I know you will love it.