We know what you're thinking, and trust us, we're right there with you. We've no idea how a speaker constructed from a foam plate could sound anything close to decent, but judging by the comments from folks that have made their own, it may actually be worth your while to do the same over your holiday break. Reportedly, all you'll need is a standard foam plate, a couple of paper strips, two business cards, some wire, a bit of glue / tape, a neodymium magnet and an audio plug; once you've gathered your materials, you can hit the read link for the how-to guide of putting together the relatively simple device. Of course, we aren't responsible for any strange looks you get should you choose to pimp your new sound system to members of your extended family.
Homegrown speaker created with foam plate