My wireless keyboard at work suddenly stopped working, and a bit of searching on YouTube showed me that it was almost certainly because the rechargeable battery (it’s solar-powered) had faded. An $80 wireless keyboard without power is pretty much worthless without that $8 battery, so I ordered one from Amazon.
It came in a surprisingly large box with warning labels on the top and all the sides about how dangerous lithium batteries can be:
Wow, you’d think it was a bomb or something. So I guess they trucked it across the country for me. I opened the box and saw the nickel-sized battery inside:
No padding or anything… just this little innocuous-looking thing that apparently strikes fear into the hearts of passenger airline pilots everywhere.