We've seen some strange devices here at Engadget, but honestly, we've never seen anything quite like Sprout. It's a unique machine that combines an all-in-one Windows 8 PC with a set of 3D scanning cameras, a giant tactile touchpad and a downward-facing projector (for displaying graphics on said touchpad). The design is built around a concept HP is calling "blended reality" that blends the 3D physical world with our 2D digital one. The obvious target audience is creative types. You know: makers, tinkerers, designers, etc... Rather than the traditional method of control built around mice and keyboards, Sprout focuses on touch and pen input. The 23-inch LCD serves as the primary display, but it's the bottom display, the 20-inch capacitive pad positioned under the camera and projector that serves as the primary point of interaction.