Griffin knows that if a child’s ears go bad today, that child won’t be listening to their headphones as an adult. So they’ve decided to protect their potential future buyers by announcing MyPhones, a set of over-the-ear headphones for kids.

MyPhones are designed for children age 3 to 12 and are smaller than normal headphones. They also include a built-in volume limiter that prevents the headphones from producing audio higher than 85 decibels, which is the recommended maximum volume to avoid hearing damage.

We’ve seen our share of wrist phones, most of them looking huge on your wrist. Now Samsung has one with a slimmer design. It’s model S9110 “the world’s thinnest.”

Thin is one thing, but this one is also small. That’s the magic formula for wrist phones. Trouble is you need excellent eyesight to see that 1.7-inch touchscreen. It sports Bluetooth, voice recognition, a speakerphone, and can even play music and check your e-mail.

With every release the iPhone and iPod gets more powerful and Apple just might be looking into integrated micro projector technology for future iPhones and iPods. It would allow your media to be shared with your family and friends whenever you wanted. It may just happen if you believe the Taiwanese rumor site DigiTimes.

According to them Foxlink, a subsidiary of Apple’s iPhone manufacturing partner Foxconn, is currently developing its own micro projector technology that should begin making its way into integrated devices as early as this year. Apple is on the list.

Some scientists from the U.S. and Canada have teamed up to create a new knee brace that generates electricity from your steps. The brace takes advantage of the stop energy that occurs after swinging the knee forward which would otherwise dissipate as heat, much like braking on an electric or hybrid car.

According to the initial studies on the 3.5 pound prototype, a person walking at 2.2 mph was able to create around 5 watts of electricity while wearing a brace on each leg. The researchers state that this device can generate enough electricity to power as many as 10 cell phones, or possibly a small laptop. Some practical future applications include using the knee-mounted generator for campers or soldiers who are not near electricity to power up GPS devices or satellite phones.