If you have any old film canisters lying around in your attic, you can give them new life by turning them into flashlights.
The electronics in this build are nothing surprising, but it’s a very tidy implementation. You just wire up a battery to an LED bulb through a switch, mount the switch to the side of the canister, and poke the light out through the lid. This build is so cheap and simple that you could probably build a bunch and store them in various drawers around your house. They might not be the biggest or the brightest flashlights you could hope for, but they’re fun to make and a great use of what might otherwise go to waste.
Film Canister Flashlight | Instructables
Turn an Old Film Canister Into a Compact Flashlight
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