I used for this project :
Osram dot-it lamp - 1$
An old headset box - the tube part of the lamp
A piece of keyboard PCB
I first demolished the osram lamp and took out the LED part , then i made a hole into the bottom of the tube likething and hotglued the LED's board in place . Then i took a piece of PCB and wrap it on the plastic part of the LED . Then I assembled everything together and switched the LED's ON. And there was a hole in the top of the tubelike thing and in the dark it constructed a cool shape on my sealing.