French designer Julian Robin has designed a tricky piece of furniture. The Cub Lamp looks like a normal block of wood (because it's totally normal to have a block of wood sitting in your house), until you turn it on (and I know you know how to do that) and it becomes a light. The interior of the Cub Lamp is etched with a leaf design.
The contrast between on and off presents a comment on nature. When off, the Cub Lamp bares little resemblance to its original form. When on, the tree the wood once was shines through.