Mason Jar Speaker - Some people drink from mason jars, while others create mason jar speakers. This mason jar speaker and amplifier set is hand-crafted in Sunnyvale CA.
Bluetooth SpeakerMake your own loud Bluetooth Speaker easy explained, cheap and…
Novel Eco-Friendly Speaker Amplifier For iPhone - eco-amp
Look what I found at UncommonGoods: mason jar speaker & amplifier. Great for taking on a picnic
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