Refractive glasses turn each firework into an explosion of hearts

In this video, Mike Augustine demonstrates a fun effect: get a pair of refractive glasses and look at fireworks. His had a heart shape in the refraction, which caused an amazing burst of hearts with each explosion.

You can get them with any kind of refraction. Legoland offers them with a LEGO brick lens:

Here's a manufacturer demonstrating several kinds:

They can be quite nice at a club with your favorite substance and a laser light show, too, just sayin'.

Image: YouTube / Mike Augustine