Lots of people visiting my house comment on all the different gadgets I have, but the only one they ask me about — where can they get their own? — is my double draft stopper. Sometimes the simple and cheap is more impressive than the complex and expensive. It’s just two long cylinders of styrofoam that slide into a cloth cover which is then slid under the door and holds the foam in placed to stop drafts. The foam can be trimmed to fit your door and the extra fabric folds back and fastens with velcro. The whole thing moves with the door, is easily removed, and the cover is machine washable. They’re available all over the web for less than $10.
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.