Mother of all dash rattles

[birdman]

Mine sounds like something large has come loose and is about to come off or has come off. What could be so noisy and not affect the cars behavior? I very much doubt any amount of foam tape will cure this one. The foam tape, pieces of felt and chunks of soft sponge can be found throughout my car and they work pretty good for the most part. Taking the dash apart again and driving it around might be the best strategy to get to the bottom of this one. My old Echo never had all these rattles. If it had been a hatchback I'd never have sold it. In my opinion the Echo's dash was much nicer looking and not so bland although I do like the Yaris's cup holders once the spring tensioner was stiffened to stay up.