I keep all my gear in my home office where I spend most of my time. In CT the winters are crazy dry from heating the house.....in the summer the dryness is from AC......My solution is a 120 gallon aquarium. The tank loses 10 gallons a week into the air....always very comfy and looks awesome. The fish dont seem to notice when the room shakes.
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I want to see some of those fossils and gem stones that are a tease in the corner of your photo.