MECHANICAL TECHNO DEMONSTRATION – YouTube

実験（まさに、工作や宿題とか）そっち系の、発明系？

Strange Musical Instruments Never Seen Before – Man Invents Hundreds of them – The Anarchestra

The 1000 OSCILLATOR MEGADRONE Is Complete! The KiloDrone Is ALIVE

Checking out a Massive Home Made Synthesizer and Other Mad Inventions

あ、e-DIYっすね。