Picture of Mood Lighting
This is a great night light or just to have for atmosphere.

We took our instructable and modified it a bit.

Skip to step 7 to see the changes. Don't forget to check out the supply list though.
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Step 1: Materials

Picture of Materials
LED Holder
LED (Color)
Fender Washer
Toggle Switch
Wire Cutters
Soldering Iron
Electrical Tape
3V Coin Battery
Film Canister With Lid (closes inside)
     -Sold on e-bay or at

Step 2: Magnet

Picture of Magnet
Place a bead of glue into the bottom of the film canister and add your magnet. This will need to be a fairly strong magnet to hold the canister up. We found 1 inch ceramic magnets worked well and did not cost to much.

Step 3: Battery Holder Option 1

Picture of Battery Holder Option 1
Strip the wires leaving about 1/4 inch of wire exposed.

Place the wire on to 3 volt coin battery. Using the electrical tape, tape the wires on to opposite ends of the battery. Make a note of which wire is on the negative end and which wire is on the positive end. In our pictures we have black as negative and gray as positive.

To see another way to build a battery holder that is a bit more challenging, but a lot cooler, check out our other instructable

Step 4: Cut and Splice

Picture of Cut and Splice
Cut the negative wire in half.

Splice the wires connected to the battery at both ends of the extra black (negative) wire.

*Cooler battery holder shown in pictures. You can build yours at

Step 5: Prepare Toggle Switch

Picture of Prepare Toggle Switch
Take the negative wire that is connected to the "battery holder" and wrap it around the outside prong of the toggle switch. Solder the wire to the switch.

Take the extra negative wire (our black wire) and connect that to the center prong on the switch. Solder it on.

Now your switch is ready!
manaljama1 year ago
hey,,,, can i use a LED that is already used because in saudi arabia they dont sell LED,, they dont even know what LED means so can i or not??? reply ASAP thank you..
Cats Science Club (author)  manaljama1 year ago

Yes, for sure.

Very nice, how many hours does it run on that tiny battery?
The battery has lasted several days running all day and night. We have several that have been running for months but they are turned on and off. Check out for more lighting fun.
That is very impressive :) Thanks.
Cats Science Club (author) 1 year ago
We hated the wires showing through the film canister so we came up with It did take awhile to come up with the idea but now that we did it, it is SO EASY!
mvoltron1 year ago
Cool! You can use the same idea for making yourself an additional bike light
Nice. Made one in blue. Pretty cool in the dark.
PCfreak1 year ago
Cats Science Club (author)  PCfreak1 year ago
Thanks so much.