I find the one built into my cell phone adequate for all of that. It's brighter than the $3 filament bulb flashlights they sell at Wal-Mart, which people consid

I find the one built into my cell phone adequate for all of that. It's brighter than the $3 filament bulb flashlights they sell at Wal-Mart, which people considered adequate for decades. I have a real flashlight (uses the same Li-Ion pack as my Bosch cordless screwdriver, 8+ hours continuous use) for something like walking at night; I don't need to carry that all the time as the phone light is plenty for all spontaneous type situations you've mentioned.