This $6 plastic sharpening tool has the cheap feel of a “as advertised on TV” item. But it does work and is super quick and easy to use. It holds a carbide V that sharpens knives and scissors when you run the blade through it. The groove keeps the blade pretty steadily angled. There are similar products for serious knife sharpening but they are more expensive. When compared to the Tormek, I have to qualify my definition of sharp — however the V does significantly improve the edge in seconds. Often that small honing is sufficient for most household chores. This gizmo is especially great for scissors, which in my experience are hardly ever sharpened after they are bought. I keep mine in my desk drawer.
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.