Thanks for the ideas, some good ones here. The one with the blind orphanage is particularly disturbing
I have an inkling one of my PCs will want to play a displaced civilian of some kind, so purely military scenarios won't work well with that. But building on some of these ideas, we could have survivors of one small town that have banded together are running out of some critical resource - water, gas, ammo, batteries, etc. and have heard that a town some 30 miles away may have some to barter. The scenario could revolve around them travelling there, bartering, getting stabbed in the back, dealing with marauders, etc.
Keep em coming in, adventure seeds are always good to hoard