Materials and tools:
Car headlight, lamp
Wires
Soldering iron
Nippers
Chips bag (foil)
Super glue, you can hot glue
Chinese LED Strip Lights (12V)
Take a conventional marker light or a car headlight. Size to your taste (the larger, the lighter)
We paste the package of chips on the inside, with a shiny surface on top (this is a reflective screen)
Now we cut the Chinese LEDs to the size of your lamp
We check the location
Be sure to cut at the junction of contacts
Turn on the soldering iron and solder the wires to the terminals of the LEDs (I always use red and black wires, red +, black -)
We connect everything in series, be sure to observe the polarity
Glue with super glue in your chosen position
Putting the flashlight back and you're done
Optionally, you can put a switch, but I use crocodiles
Motorcycle battery is very light and mobile
Here is another option, along with an incandescent lamp