100 yen shop gems; sensor lights

I've been thinking about the most recent question genkidesu asked on the Q&A section of City-cost. She invited readers to comment on 'what is your best 100 yen store buys'. Sensor lights didn't come to mind immediately, but when I realized that today is "sensor day", I instantly remembered the gem that is 100 yen shop sensor lights.

Honestly, I may not ever have known that the 100 yen store sold sensor lights except for my parents. On one of their many visits, my Mom noticed the sensor lights in our local 100 yen store. They are one of the few items that cost more than 100 yen, but at 300 yen they are still a steal. She bought a few of them that year. Then on her next visit, she bought even more! And thanks to her, I bought some of my own. They are so handy.

As above, today is Sensor Day. The date is a pun on 10/03 being read "sensa", the Japanese for sensor. The anniversary was established by Optex FA Co., Ltd., an industrial sensor company headquartered in Kyoto. They even created a character for the day. He's known as Kenchi-kun and his nose acts as a sensor!