2007 Honda Fit Sport front end noises

My 2007 Honda Fit Sport has been making a rattling type noise, coming from the front passenger side of the vehicle, but primarily only when the car is in reverse or idling. Any ideas?

The next time that the car is in the shop for service, have them check for a loose or damaged heat shield on the exhaust system. This problem is definitely annoying, but it is not dangerous.