My Very Easy Method: Just Set Up Nine Planets. The order of planets in average distance from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto.
Toronto Girls Can Flirt, And Other Queer Things Can Do. The order of Mohs hardness scale, from 1 to 10: Talc, Gypsum, Calcite, Fluorite, Apatite, Orthoclase feldspar, Quartz, Topaz, Corundum, Diamond.
Cows Often Sit Down Carefully. Perhaps Their Joints Creak? The order of geological time periods: Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous, Paleocene, Eocene, Oligocene, Miocene, Pliocene, Pleistocene, Recent.
See more List Order Acronyms at http://www.fun-with-words.com/mnem_example.htm