I’m ashamed to admit it, but I’m not terribly eco friendly. Each year, I throw out a massive amount of soda cans, coffee cups, and Chinese food containers. Sure, I recycle the cans, but everything else just winds up buried deep in a landfill. Instead of throwing those things out, you can turn them into portable speakers with a little help from Trash Amp. Just cut the top off of a can, drop Trash Amp in, plug in your MP3 player or guitar, and you’re ready to rock out. Just be careful not to throw out the Trash Amp by accident.