super power usage help

[dans]

Hero with invulnerability to metal (metal bounces off her) but not to non-metallic things

can fly

has super strength

can move at enhanced speeds

I need a clever way for her to generate a very bright and sustained light (2 minutes at least), also a clever way to deaden very loud sounds. Any thoughts?

[redsycorax]

Throw rock containing magnesium or phosphorus at an adjacent hard surface
Possibly, use vibratory abilities to set up an opposing sound wave that cancels out the initial sound