Here's an idea that came to me last night:
So I was lying in my bed, waiting to fall asleep when I heard a small high pitch noise. I lay still a moment before I determined that it wasn't my tinnitus acting up. So I went up and tried to find the source of the sound. It didn't take long before I discovered what made the barely audible screech. It was my cell phone recharger. Apparently I had accidentally left it in the socket when my phone was fully charged, the electricity running through the charger generated the noise.
Since rechargers still draw power when they're not connect to a device, I removed it intermediately. But it got me thinking. This is the perfect example of "It's not a bug, it's a feature". Why not install these gentle reminders in every recharger alike? A small LED, a soft high pitch noise, or something similar, could be used to remind people of removing the chargers when they're not in use. These reminders would only be active when a device is not connected to the charger but still in a socket. Why not add a small LED array on big chargers saying:
"Chargers use energy even if they're not charging. Save money; unplug"

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