The battery no longer works but I’ve kept it plugged in and used it for streaming music at work the last few years. Today it’s in an infinite loop of rebooting and I noticed the glass popped out!
The closest place to me that accepts hazardous batteries without being paid is over an hour away from me.
So the spicy pillows I have are contained in a metal waterproof container that's buried under bricks in an unused section of my driveway. At least if they go, they go without taking out my house or anyone else.