We've seen purpose-built hangers that stack like this, but usually the lower hangers aren't built to hang from the rack on their own when you don't need them to stack anymore. These closet cozies turn regular hangers into stacking ones, and back again when you're done.

This is great for those of us with coordinating or ultra-thin hangers, allowing us to get more out of our closet space without having to mix and match our hangers.

• Closet Cozies by kraftkorner