I played with a few different, everyday materials and mechanisms to create a switch for this assignment. And finally settled on the conventional sealing clips, attached with pieces of conductive aluminum foil. When both of the claws of the sealing clip meet the LED bulb gets illuminated in a similar manner to a door closing or something being sealed.
The plastic outer body acts as the insulating material and has pieces of the aluminum inside it. When pushed together the conductive materials get connected with the wires and act as a whimsy switch that you can tinker with to turn the light on and off.
Here is the video,
