Griffin and Crayola are already best of friends through their ColorStudio HD collaboration for the iPad. They're deepening that relationship at CES with a handful of iPad accessories and apps based around the quintessential crayon. Heading up the pack, the Crayola Light Marker you see above upgrades the earlier input by letting kids draw in the air; they can splatter (thankfully virtual) paint and play other games without scribbling directly on the tablet's screen. A pair of cradles are joining the marker, including the Digital Activity Center portable lap desk (after the break) and the briefcase-like Color & Play Workstation. The software side is being rounded out with special Barbie and Hot Wheels versions of the ColorStudio HD app, each of which has drawings themed around the perennial favorite toys. Griffin expects the Light Marker, Digital Activity Center and Color & Play Workstation to reach young artists' hands in the spring for $30, $40 and $20 respectively; the specialized iPad apps should arrive later in January, each for $3.