Link Objects to Scene

Reference

Mode:

Object Mode

Menu:

Object ‣ Link/Transfer Data ‣ Link Objects to Scene

Links the selected objects into a different scene than the current one. The Link Objects to Scene in the Adjust Last Operation panel lets you choose between scenes.

This makes the same object exist in more than one scene at once, including its position and animation data. The object's origin will change its color to reflect that.