Question: What supplies are needed to make an infinite LED tunnel?
Option 0: - wooden bar (80cm X 3cm X 1cm)    - copper wire    - 20 leds    - a semi-reflective  mirror    - an ordinary mirror (the same size of the semi trasparent one)    - a DC transformer (3V or the same voltage needed by the leds)    - glue        - saw    - water gun
Option 1: - wooden bar (80cm X 3cm X 1cm)    - copper wire    - 20 leds    - a semi-reflective  mirror    - an ordinary mirror (the same size of the semi trasparent one)    - a DC transformer (3V or the same voltage needed by the leds)    - glue        - saw    - soldering gun
Answer: 1