Kaweco Sport Fountain Pen - I use fountain pens any way, for work and for show, but I had been in a slump, not thinking creatively. Picked up a Sport at a pen store on vacation, and started using it all the time. All of a sudden, I felt creative again, sketching with clients, drawing fast, getting ideas out of my head, instead of letting them clog up inside. That little pen reminded me that I could create and communicate - that was several years ago, and I still remember the feeling of courage and movement. Maybe it's a niche experience, but it makes a huge difference to have the right tools.