I think my brothers and I all got them as Christmas presents. I probably wasn't too thrilled when I unwrapped mine – after all, it wasn't a toy.
But to a little kid, there was something very mature about a thing that you filled with a flammable liquid, lit, and then carried around in a little drawstring pouch. It was like having all the manliness of a lighter in your pocket – without having to smoke!
Not surprisingly, the hand warmer got a lot of attention from the kids I walked to school with, who were curious about it – and more than happy to hold it for a while. Sometimes it was a little hard to get back.
I have no idea what ever happened to mine. Maybe I didn't get it back after all.
Anyway, I did an online search to see if Jon-e hand warmers are still being made in 2014. It doesn't look like it.
I suppose it's just as well. It's not too hard to imagine a school going into lockdown in 2014 if one of these things were discovered in a kid's pocket.