Withings watch charging station has a spot for the charging dock and a hollow core for storing the USB cable. The USB part can be pulled out of the station without releasing the whole cable, giving a more organized look while keeping everything together.
The model consists of the upper part/box and lower part/lid. The lid has snap-fit joints which match the box in 2 orientations.
Storing the cable:
Pull the USB end through both of the rectangular holes, then pull the rest of the cable and wind it and store inside. Align the bottom portion and insert until the snap-fit clips are fully inserted.
The charging dock is from the Withings Steel HR series, but should be compatible with newer watches as well. I do not have the new (longer) dock, but I can try to approximate if given the dimensions.
The author marked this model as their own original creation.