Quantity   Component name
1 × Raspberry Pi Zero $5 mini computer
1 × USB Sound Card $6 from Amazon like this http://www.amzn.com/B00IRVQ0F8
1 × USB WiFi Adapter $8 from Amazon like this http://www.amzn.com/B00KA5XVOW
1 × OTG adapter (at least two ports) $5 from Amazon like this http://www.amzn.com/B00OZDUTMM
1 × Momentary Switch
2 × LED Fiber Optics / Emitters