University of Bristol Professor Sriram Subramanian and his colleagues have invented the SensaBubble. It's a way to make bubbles that contain different scents and upon which different images can be displayed.
This isn't meant to be a updated version of a lava lamp. The researchers envision using the bubbles to send information to people via scent and color. In other words, it's a human-computer interface.
I have to say, the researchers who developed SensaBubble seem a lot more optimistic about its use as a communication device than I am. If you had to send someone a bubble smelling like a bacon cheeseburger to tell them dinner's ready, you might as well just yell.