As much as the Mathmos Tuba Light could work to set a mood in the nursery, it's just as easy to imagine it casting a warm, color-enhanced glow in grown-ups' rooms. Stick your hand into the seemingly innocuous center hole, and the light starts to cycle through a series of cozy colors while also responding to ambient sound when in "Music" mode. The $196 Tuba Light is made from pressed glass and can be snagged in two different finishes (white and silver) from Moderntots.