Magnetic blobs that tell time.
You may not know what Ferro Fluid is. Or why someone would make a Ferro Fluid Clock out of it. But you will have to admit after seeing it in action that it is quite awesome. The little black blobs look like living things moving and dripping around until they form the numbers of the clock. And they are constantly changing shapes, very mesmerizing to look at that you’ll actually lose track of time admiring it.