From the wry mind of Andrei Codrescu in The Poetry Lesson:

The Ten Muses of Poetry

1. Mishearing
2. Misunderstanding
3. Mistranslating
4. Mismanaging
5. Mislaying
6. Misreading
7. Misappropriating cliches
8. Misplacing objects belonging to roommates or lovers
9. Misguided thoughts at inappropriate times, funerals, etc.
10. Mississippi (the river)

I have found that these muses are useful for more than just poetry.