If you are looking for a "creepy" or horror-themed story, you might be thinking of:
If you were looking for information on how to "cover" or store toys professionally:
After escaping from prison, Manchester hid for months inside a North Carolina Toys "R" Us .
There are numerous fan-made horror stories (creepypastas) about lost or "deleted" scenes from Toy Story involving Woody or Buzz acting in disturbing ways. Practical Toy "Storage" Stories
Parents often use wall baskets or custom-built wooden toy boxes to manage stuffed animal collections.
However, there are several real-life stories and popular urban legends involving toys and storage that might be what you're looking for: The "Roofman" of Toys "R" Us
He created a secret living space in an abandoned Circuit City attached to the store, connecting them through a hole in the storeroom wall.
This common horror format often involves a ".zip" or ".exe" file that contains a corrupted, haunted version of a childhood game or toy.