Here's something for Sue. Safe Turn is a wrist-mounted automatic turn signal for cyclists. You strap the Safe Turn light to your wrist. When you raise your arm to signal a turn, a tilt switch activates the three flashing LEDs. (And we all signal our turns, right?)
Watch a video of the Safe Turn in action.
The Safe Turn signal light is available worldwide directly from Safe Turn in Australia. You can also buy Safe Turn from bike shops through distributors in Australia, Japan, Israel, and New Zealand. They haven't lined up U.S. or European distributors yet.