I carry 2 car keys: one with my house keys and the other one with a L0D. Haven't been locked out of my car or left in the dark ever since. If you drop your keys at night, just make sure it's the house keys, not the one with the powered off flashlight.
Emergency car kit essentials: duct / electric tape, sandpaper, pair of pliers, flat screwdriver and swiss army knife. This stuff has gotten me out of more problems than I wish to admit. The swiss army knife was needed at work to open my can of soup a few times.
I started using a filtering power bar connected to my computer's UPS to plug my chargers and small electronics after I recently lost the AC/DC adaptor for my Tenergy universal charger due to a suspected brownout.
Microfiver window washing cloths from the car care aisle are the best way to clean glasses, flashlight lenses, windows - anything transparent. No more rubbing for a half hour to get that nasty nose/finger oil off.
No generator and you like camping? get a power pack: it'll charge your batteries, camera, Ipod and all accesories when camping and you can still run small things during a power outage - especially the cell phone charger. Mine can also boost my car if needed.
Also, get a portable stove. You can use it to cook during power outages too (but be careful - some fuels are not meant to be used indoors: read the warnings)
Speaking of white vinegar and coffee, you don't need to use an expensive cleaner to clean out the gunk in your coffeemaker. Just run a cycle using white vinegar. The hot vinegar works surprisingly well in dissolving old coffee stains and other crud from the machine and the carafe. One word of warning though - the whole house will smell like a pickle factory while you're doing this!
Here's a smell free solution: 50% Ice 50% water and ad a lot of sugar. Swirl it for a minute or two then let stand for a while. Rinse and you're good to go.
CAR:
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Flashlight: You usually have room for a slip of paper around the battery in your expensive light. This is a good place to put the "reward if lost" message. The battery will eventually need to be replaced. [...]
Also print the morse code on that paper. What is momentary good for if you can't use it to save your life?
Nice revival. I like the glued flaps idea too.