An example system includes a plurality of moveable light emitters, each moveable light emitter configured to independently emit a display light from a current display location within that moveable light emitter's range of motion responsive to activation from a corresponding light activator. The system also includes a location engine to determine, for each light emitter, the current display location of that light emitter, and a mapping engine to map, for each current display location, the light activator activating the light emitter currently located at that current display location.