Special rule: just this once, 'Mione is permitted.
Erised stra ehru oyt ube cafru oyt on wohsi = I show not your face but your heart's desire does NOT count!
For what it's worth, here are my attempts so far.
Inexplicable fortune-telling while under the influence of Polyjuice:
Why HG/LM can't work:
And my favourite, Lavender in a moment of passion: