This slender black plastic stick humidifier is perfect for travel humidors that need some helps. It takes up about as much space as a lonsdale-sized cigar, and holds enough moisture for a few weeks, at least.
Excellent and inexpensive. I got tired of cigars drying out in large wooden humidors. I switched to smaller plastic ones, started using this product with them and it worked perfectly. Cigars are always fresh and moist.