These individual Cigar Humidifiers are popular with Cigar smokers. 3/4" or 7/8" inside diameters are available. The pictures set are with Chrome fittings and have a 3/4" ID.
Screwdriver handle based on the Screwdriver provided by Henry Ford with the Model T tool kit. The diameter is 1 1/4" and it is 4" long. The fluting is done with a Router mounted on the Lathe bed.