Star Wars Weigh Scale
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.