These have been around since the age of dinosaurs, but they still work better than most gadgets. We use them for labeling almost anything that needs a name or number. The labels adhere well and have a clear retro look. The inexpensive plastic device is mercifully idiot-proof. Cheap too.
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.