Crazy but Brilliant: Japan's One-of-a-Kind Inventions

12. Japanese Scream Jar

What it is: A soundproof jar for stress relief
Invented: 2016
Average Price: $81.72

The Banraishop Scream Jar Voice Silencer lets you scream into it to release stress. The jar muffles sound, allowing only a faint murmur to escape.

Scream Jar in Japanese @John P. Pinterest/MMcCartney

While primarily used for stress relief, it’s also helpful for karaoke practice.