Hi friends here is an somewhat
innovative idea as well as simple way to make our known knowledge useful.
We need just 3V LED, a resistor
in order to provide steady current, 3 CD’s, refractive lens, an USB wire,
bottle (water bottle like)
Make a 3 CD as cone shaped by
joining them, place the lens in the arrangements now solder the led(anode which is longer lead) with
resistor, now take the USB wireconnect
them with two end of LED(+ve,-ve correctly), now place cone shaped
CD in the mouth of the bottle then put the led connection inside it through the hole in CD no connect the USB
with your lap or any USB port.. enjoy the illumination.