Why not get your stash a gift, it deserves it.
Glass Jar & Bamboo Lid with Built-in Analog Humidity Sensor
Humidity Sensor (no battery needed!)
2-way replaceable humidity packet (maintains 58-62% humidity)
Small jar - 2.9" H x 2.0" diameter (holds up to 1/4 oz of dried herbs)
Sold in cases of 6 for 57.00