I actually store all of my filament (that isn’t loaded into my AMSes) in a large antique wooden steamer trunk (like a pirate chest). It’s massive, and can hold dozens and dozens of spools. Wood is breathable and absorbs moisture, but also allows it to evaporate out into the room (whereas plastic bins trap it inside). I keep a bunch of dessicant inside, and I’ve never had a problem with filament humidity. The filaments I commonly use are always loaded up in my 4 Bambu AMSes. In there, I have extra dessicant pods with reusable dessicant beads.