So we were in a campaign where we were fighting in a war and the other side had a starlight lazar super weapon designed much like a telescope that we had to destroy.
DM: so how are you going to do this?

Cleric: we could contact an engineer that worked on it and see if they’ll turn against their side.

(Chaotic neutral) Druid: we could set fire to the tower.

Half orc barbarian with the highest intelligence of the party: “hear me out - we get a mirror….”

And the mirror worked