The Fireside Audiobox is a wireless music player with a trick up up its sleeve. See that silver tube on top? There's a speaker on one side but the other end connects to a small propane tank underneath that pumps gas up through a series of small holes.
When you introduce fire to the burner, it ignites a series of tiny flames that react to the pressure within the tube, creating a trippy visualizer as the fire pulses to the beat of your music.
It's basically an enclosed version of an old physics trick called a Ruben's Tube. What you're actually seeing in the fire is a physical representation of the nature of sound waves.
You can find instructions online to build one yourself and people have a lot of fun setting them to play popular songs like the Mario Bros. theme, but the Fireside Audiobox is a portable and relatively safe option that comes with a removable glass cover so your house doesn't go up in flames while you zone out.
The back of the speaker has an independent gas valve to adjust the height of the flames, but you don't have to turn it on every time you play music, of course. That said, the Kickstarter description says a small propane canister will last for about 8 hours of constant use, depending on how much pressure you push into the tube and the intensity of your music.
The Kickstarter page is currently offering the Fireside Audiobox to early birds for $349 (£275, AU$455). That's a lot more than most of the Bluetooth speakers on our list of favorites, but then again, none of them boast an open flame as a distinguishing feature.
Regardless, the campaign needs a little more funding to reach its goal, and backers only have 11 days remaining to support the cause, so head over and contribute if you want to be the first to get your hands on the Fireside Audiobox.
Editors' note: As always, please note that CNET's reporting on crowdfunding campaigns is not an endorsement of the project or its creators. Contributing to a crowdfunded project comes with risk. Before contributing to any campaign, read the crowdfunding site's policies, such as those for Kickstarter and Indiegogo, to learn more about your rights (and refund policies, or the lack thereof) before and after a campaign ends.