Don't underestimate the importance of a pen, ink, and paper you like. I found my pen a decade ago: Lamy Studio, in British Racing Green, with a medium nib. I found my ink not long after, from J Herbin's collection.
It wasn't until I got a nice notebook from Leuchtturm 1917, though, that the ensemble came together and I started looking for excuses to get my kit out and write things down. Since then, I've moved onto notebooks from de Kempen, but the point stands
A nice pen is... nice. But it's as easy to fall into geeking out about pens and paper as it is keyboards, knives and other kitchen utensils, tools, etc. In most cases, any pen is as good as any other. Or just find a cheap mass produced pen that feels good in your hand. They are plentiful. Then buy a stock of them.
I actually like using pencils, with a thick lead because I tend to have a pretty heavy hand when writing and I will continually break a thin lead.
Pencil with soft lead works perfectly for me.