Used to store in the wardrobe, with copious packets of silica gel, but maybe I was tempting fate, living in Asia.
Have since had a small humidifier given to me by a colleague, and the kit now resides in this; climate controlled with no chance of fungus.
Having said that though, maybe I've been lucky over the past 7 years living in BKK and the silica gel solution was fine. A friend living with me had fungus start in her 24-105 L lens (now ok after being cleaned), but the gear was kept in different rooms and she didn't have silica gel in with hers.