Darth Vader kneels humbly on top of an illuminated pad when he is chatting with the Emperor, which I’m guessing is some sort of holograph phone thingy.
With a scale that looks like this, you too would be saying “What is thy bidding, my master?”
This would probably need to be plugged-in, with all the lights it has. Perhaps one without lights would be adequate, chances are your bathroom is well-lit anyways.
The transporter pad from Star Trek could also be employed in a similar fashion. Same goes for the pink hoverboard from BTTF.