Giving away pentaperfect Cleffas in Moon Balls, knowing Fake Tears/Wish/Aromatherapy/Misty Terrain. They're Calm, and mostly have Magic Guard (some with Cute Charm tho).
Also giving out any imperfect 5IV Pokémon from this table:
>>18675099and female 31/x/31/31/31/x Feebas.