I have three unaccounted for 60 min classes left in the semester (starting this Friday) and I'd like to give a BRIEF (I hate having a mere 1/2 credit course to cover inorganic!) introduction to solid state chemistry. My students have done structure and a brief intro to properties and bonding in solids in their intro classes, but I'd like to give them a taste of what's out there at a higher level and how it might be applicable, preferably with a paper discussion that ties into energy (solar? batteries?) on the last of the three days. What would you do if you were in my shoes?