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1. Old earbuds or really cheap ones from wal-mart
2. Empty gum box. Just take out the gum and the weird studd that keeps the gum in,
3. Tape
4. MP3 player
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3*
Well, the idea was a solid base - acoustic amplification. However, the materials could be better. Instead of a gum box, try something like an altoids can. Something a bit more steady.
Also, google how a banjo resonator works. Apply that to this invention here and bam, you have acoustic amplification.
its just a small guy posting his ideas, after all......
you really think sound is gonna get out by poking a few holes with a needle?!?!
I REALLY agree with you there,AlisterBro