Hairplant gourds are carved out on the top and the bottom of the gourd to provide air flow and moisture control. They have a polyacrylic finish on the inside and the outside. But, they are gourds and are not intended to get wet. Thus, a dryish airplant or artificial plant would work best. If you're using an airplant, I suggest submerging the plant in water once a week, letting it dry on a paper towel and then placing it back in your gourd. Gourds that are hollow and carved out will break or crack if dropped. Airplant included.
Measures: 6" without plant