@matigo It's a never-ending battle that I probably wouldn't mind too much with most of my family, who're far tidier than I am, but dad actually just has piles of stuff in the living room, dining room, and walk-in closet that he hasn't touched since we moved in and is unlikely to ever get around to "fixing". Not to mention the 4 or 5 large boxes of stuff stacked on the balcony, as well as another 5 in our other apartment. All electronics and bags.
It's getting to the point where I can't actually throw anything that's remotely usable (10 year old binders , etc.) out without him intercepting it and stacking it on top of one of his piles.