Ask HN: What's your favourite notebook and pen?

I've been forcing myself to write down more ideas, thoughts and processes whilst working. My job requires me to work on more than one codebase at a time, frequently switching projects and languages. Previously I would hold all of this context in my head and I'd go home feeling awful and not wanting to build or do anything more productive. From writing constants, to expected outputs and build times. It's freed up so much more brain-power.

Switching to pen and paper has really helped me manage of these contexts.

So my question is, what's your favourite notebook/paper and pen to write, doodle or think with?

Favourite notebook - leuchtturm1917 Pen - Uniball eye

Lamy Safari medium, and either a Moleskine or Leuchtturm1917

I carry two Bic biros (one black, one blue) everywhere. I can lose them and there's no problem. They write consistently and state that I'm not all prissy about accessories.

Napkins are my notebook of choice.

I bought a nice refillable journal on etsy that I absolutely love. This one: http://www.etsy.com/transaction/145265531

I love it for two reasons: 1) It's refillable with 8.5x11" paper cut in half. I print my own lined and music staff paper and hole punch it myself. 2) Because it's a ring binder, I can reorganize the pages at any time. This is nice because I don't have to worry about keeping like content together as you would in a typical journal.

I use a TWSBI Diamond 540 fountain pen. My inner nerd is confirmed by my love of the clear barrel (called a "demo" style pen) that lets me see all of the inner-engineering of it. The current version is the 580, available here: http://www.gouletpens.com/TWSBI_580_Fountain_Pens_s/1120.htm If you only jot down the occasional sentence, a fountain pen is probably not worth the bother of manually refilling or the risk of a leak if you don't know how to use it properly. If you write a lot, I think it's a good investment, as it's much easier on the wrist.

I am a huge advocate of pen and paper journaling. I've written in longer form about how it can be a tool for self-improvement and self-awareness here: http://wistia.com/blog/non-sequitur-fridays-journaling