I don’t use pen and ink anymore. I use a Wacom tablet and stylus to draw directly into Photoshop, Illustrator, etc. It’s really the only way to draw with computers. I met a cartoonist who was drawing using a mouse; I have no idea how he did it. He was like a mountain man. I use the smallest of Wacom’s Intuos tablets (about 4 x 5 inches) to plug into my laptop so I can lean it against the tray tables on airplanes.
A cool tool is anything useful that is superior to comparable items. If you think this tool is inferior suggest a better one. You are welcome to insult a tool, but comments containing insults to individual people will be deleted. Corrections of fact are always welcomed, if stated politely. Recommendations of better tools are dearly wanted and may be elevated to the front page.