For cranial nerves, the Swede should be a Finn:
On Old Olympus's Towering Top A Finn And German Viewed Some Hops

The letters stand for Olfactory, Optic, Occulomotor, Trochlear, Trigeminal, Abducent, Facial, Auditory, Glossopharyngeal, Vagus, Spinal Accessory, and Hypoglossal.

Since the Auditory nerve is also called the Vestibulocochlear nerve and the Accessory nerve is also called the Spinal accessory nerve, some remember:
Oh Oh Oh To Touch A Fresh Virgin Girl's Vagina And Hymen

For carpal bones there's the unforgetable:
Never Lower Tillie's pants, Mother May Come Home
standing for Navicular, Lunate, Triquetrum, Pisiform, Multangular (greater), Multangular (lesser), Capitate, and Hamate.

For the planets sans Pluto, you might like:

My Very Exotic Mistress Just Showed Up Naked