The Lightbulb/Speaker might be pretty good depending on how they sound. Even if they don't sound that good though, the convenience alone makes them a worthwhile thought.
As for the ball you control with your smartphone, just think of the hours of fun annoying the dog/cat...
For the rest of the holiday list, here is the link:
Holiday Tech Gadget Sneak Peek | PCWorld
GiiNii International Audio Bulb
What if installing a wireless music system was as simple as screwing in a light bulb? That's the idea behind GiiNii International's AudioBulb system, which features light bulbs that double as wireless speakers. You just screw them in to your light fixtures, pair them with the system's wireless base station, and let the tunes play.
Price: $300 | Available: October 31
Orbotix Sphero Robotic Ball
Why, yes, Sphero is a robotic ball, and you control it with your smartphone. Why would anyone want that, you wonder? Just think of all the fun you can have trying to outrun the family pet. Or playing a downloadable game (for Android and iOS devices) that lets you destroy virtual zombies or enjoy a round of golf with Sphero. What could your family do with it?
Price: $130 | Available: Late 2011