Front end rattle

[sbatbte]

2018 Legacy, low miles, little abuse. There is a front end rattle that I cannot find. It sounds as though something is hitting plastic bumper, side panels or plastic skid plate, when I drive over rough paved roads. I’ve pulled plates and secured loose wires, hoses, etc. better than they were, but no luck.
Anyone have similar experience and luck with solving?
Thanks

 

[Ecmbuster]

An interesting test that was performed on a Mitsubishi Raliart some time ago. The vehicle owner had a noise that also was difficult to find. The owner had a AUX input to the stereo system. I adapted the signal generator from the Android tablet to the AUX port and created the "offending frequency".
Found a loose under body panel.
https://search.f-droid.org/?q=signal+generator&lang=en

 

[dave13net]

When your going over the bumps hit your brakes to see if the rattle goes away.. Maybe brakes..