Out of sight, out of mind

Generated image of a woman pushing all her clutter out of sight
The idiom out of sight, out of mind means that people tend to forget about things that they no longer see or think about regularly. When something disappears from view, it often disappears from attention as well.

The saying has been used in English for several centuries and reflects a common human habit of forgetting things that are not easily visible.

Once the old toys were packed away in the attic, they were out of sight, out of mind.