I love having the system-of-record being something powerful on a laptop, alongside having some paper artifact with just a small constrained view, which you update with a pencil and then reconcile with the SoR later.
This is what I do for todos and reminders, with a few index cards binder-clipped together with a tiny pen. I use [0]; its size is right but it’s just a ballpoint refill that isn’t particularly great. Using it makes me miss my typical fine-tip gel pens. Anybody else use this kind of system and have a tiny pen to recommend?