HERCO HE360 Guitar Humidifier
Herco's Guitar Humidifier. Large clay-filled plastic container (1 5/8" high x 2" diameter) helps prevent drying out and cracking of guitars, ukuleles, violins, cellos and other fine wooden instruments.
A proven method for humidifying your guitar during winter or dry conditions. Simply open, immerse in water 5 minutes. Close, wipe off excess water. Repeat twice monthly. Store in case with instrument.
Sure beats using a potato!