Star Wars Motion Lamp
These Star Wars Motion Lamps fashioned after lightsabers require you to pick a side. Choose Luke Skywalker or Darth Vader. Luke’s features his ROTJ hilt with blue lava-like wax; Vader’s has the Empire hilt with red lava-like wax. Mechanical engineers could take this opportunity to go head-to-head, based on whether they think the motion inside the lamp is demonstrating Rayleigh–Taylor instability or Rayleigh–Bénard convection.
