I’ll start. My players were fighting some Lizard Folk that had camped out in front of the tomb they were trying to get in and they for once used some strategy! The Paladin used her bag of tricks to summon a Baboon to distract the Lizards while the party snuck up the hill and hid in some tall grass. after the Lizard folk started attacking the baboon the wizard used levitate to lift one of the lizards up 20 ft. The Druid knocked on of the other lizards prone and the wizard dropped the levitating Lizard on top of the prone one. Using a falling object damage chart i found somewhere we and falling damage from the dmg we did some quick shitty math and figured out that the fall and killed both of them.
Not me but the druid of our campaign was trying to hit a goblin on a watch tower with produce flame. Kept missing and just decided to burn the whole watch tower down. Then as the tower was burning the warlock decided randomly to hit it with eldritch blast sending the whole thing falling. Just to kill one goblin.