I want to make it private before it gets deleted, but I'm a free-to-play player and can only do it for one item.

There's something I've been using for a long time that's about to be deleted. I want to set it to private and keep it, but I'm a free-to-play player, and I have no intention of spending money. It's the worst situation where I can't keep it unless I pay. What should I do?