I make a point of keeping a camera/lens combo with a spare battery in a small bag in our main living space. If something appears or I have to leave quickly I have some photo-capability ready to go. My current version is an EM-10 with the Lumix 12-32 in a Crumpler Pleasure Dome (who picks these names?) bag. I'm really curious to hear what others do, if anything, for "imagencies".