Netbook users can scurry right along, there's nothing to see here. So can anyone interested in ergonomics, precise input devices, and gaming mice. Oh, and if you're strictly a desktop user, you can join the exit group too. At this point we should be left with notebook users who demand nothing more from their input peripheral than the ability to move a cursor around the screen. The Disk Mouse concept might be just the device you never knew you wanted.

It's been a little while since we checked in with Yanko Design, a "Web magazine dedicated to introducing the best modern international design." The conceptual inventions we run across are sometimes fantastic and at other times fantastically ill-conceived. One of the latest additions to Yanko Design's site is a Digital Neck Pillow designed by Jung Hwan Song and Joo Young You. How would you rank this one?

Ma Yi Xuan's "Double USB" concept swings both ways, meaning it can be plugged in right-side up or upside down. It doesn't matter because the only way you can screw up is by trying to jam the USB connector into a non-USB port.

"The Double USB has two contact layers which are both stretchy," Xuan explains. "This always promises one layer to touch the contacts of the fixed interface, no matter which side is up. At the same time, the other layer is pushed in."

You get the gist of it from the photo below. Our only real reservation comes from the spring action, which we could see wearing out over time, especially for devices that are frequently plugged and unplugged. Otherwise, we're completely down with a reversible USB connector concept.

Designer Dave Hakkens said he was inspired by a hamster ball when he came up with the idea for his Dustball, a giant robotic vacuum cleaner that rolls around the floor sucking up dirt.

"I created a little friend just rolling around and which you could push or kick in a direction to clean," Hakkens explains. "It has no trouble with cables or anything like that, it's strong, and when it rolls before your feet you just kick it out of the way."

When the Dustball gets its fill of dirt, it rolls back to its original destination and glows, letting you know it's time to empty the dust bucket inside.

We have to admit, it's a cool looking design, and maybe even functional for large open areas, but the shape could be problematic when it comes to vacuuming near walls, under tables, and near furniture.