They’ll light up the party. You’ll have a blast with them. The speaker, the speaker, the speaker is (made of recycled jerrycans, which are used to carry extra fuel, a substance which can set things) on fire! That’s all I have. I’m all punned out.
Unfortunately we don’t have any details regarding the specs of the Jerry Can speakers themselves; all that seller Reestore says is that they sell for £285 (~$470 USD), weigh about 55 lbs, and are available in a variety of colors. Kinda expensive for something that is recycled and looks recycled. Even more unfortunate if you do want these things, is that Reestore will only ship them within the UK, and doesn’t say if the price is for a single speaker or a pair. I guess you could always make your own for a whole lot less.