These soccer-ball-shaped water jugs make great firestarters

"Святой источник" выпустил зажигательную бутылку

"Святой источник" выпустил зажигательную бутылку Watch this video on YouTube. Some World Cup fans who picked up AquaStar's commemorative water jugs found out the hard way that leaving them in…

Some World Cup fans who picked up AquaStar's commemorative water jugs found out the hard way that leaving them in the sun is not a good idea, as they make fire-starting magnifiers.

The Svjatoj Istochnik brand (roughly "Holy Spring") not only can catch matches on fire, but it also burned the floor of another consumer who left bottles in the sun.

Of course, lots of things can start a fire, like a water-filled sandwich bag:

Can You Start a Fire with a Sandwich Bag? (Cool Survival Hack)

["Holy Spring" released an incendiary bottle] (YouTube / Fontanka Ru)