Here is what I did in my house. It may not apply elsewhere.

Our living room has sofas, off course, but they are no ordinary sofas. They are built-in concrete bins, covered with upholstry. Seats can be removed to reveal wooden boards with hinges. Lifting them reveals several storage 'boxes'(total about 2 cubic meters).

The living room is always air conditioned , so the contents of those sofas/storage bins are always in cool environment.

This setup is a win-win solution for a dad who wants to store stuff and mom who wants no 'warehouse' at home, and wants the house to look nice and pretty.

This method also utilizes the cooling energy that is spent anyway, to cool the prep stuff.

Doing this in my own house is easy, trying a similar thing in my dad's house is another thing altogether. LOL

Now imagine me telling dad that I have a nice bed for hinm as a gift. Only thing he should allow me access to the drawers underneath it time to time. hahahaha. I will get FREE cooling for my stuff stored in his house, but the down side is my dad, well, it's just not safe to store things there..

This kind of long-term static "free cooling" is what I am looking for actually.