Artemis' "Congratulations for the 5,000th First Love" sign.
Crossed with a minor CMOA. I mean, he kept count of Minako falling in love something like 13 times a day...
Her fights with the villains of the Pet Diary arc:
When faced with Nyan Nyan (a demon cat) and an horde of demon cats, she knocked them out all by summoning an horribly stinking cloud (actually the atmosphere of her 'Holy World' Venus. Artemis mistook it for a fart). Then she dispatched the enemy... And a witness mistook her for a fake.