30th Chaos Communication Congress: <a href="http://events.ccc.de/congress/2013" target="" rel="">http://events.ccc.de/congress/2013</a><br>More Info on this DIY Pneumatic Tube System: <a href="https://events.ccc.de/2013/12/08/seidenstrasse/" target="" rel="">https://events.ccc.de/2013/12/08/seidenstrasse/</a><br><br>It needs an empty cut open spray can and a LED lightstrip (with a23 battery and holder) to be complete. You can get spraycans from us at the event - ask at the DJ Booth at Villa Straylight. <br>Other then that you can fit a LED Strip behind the "Windows" in the top and there is everything there to wire it and make it even turn on once you put in the Spraycan.
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