Blow-torch
The circuit itself is very simplistic, in that only the components essential to the LED lighting up are present. For the switch I used a piece of paper and copper tape. I tightly stuck copper tape on the paper such that it would bend the paper. So as long as the paper stayed bent, it would remain in contact with the green jumper wire, thereby lighting up the LED. To turn off the LED, I can blow on the paper from above to straighten the paper, thereby disconnecting the circuit. The circuit does not have a resistor because when it was connected, the LED would not light up brightly, likely due to too high resistance in the circuit.
