I then set it on my knee, whistled as loud as I could, and waited.

And there it is coming like this curious metallic creature was waiting for him. lol this little metal fella loves the hand wormer. It’s just like it feels the heat. Then another one came. He got his hand warmer as well otherwise they would start the fight over it. Then another one came, eventually he was surrounded by these metal creatures. Each one of them being different size, different look...They eventually left after the warmer got cold to look for other heat source. The source they were meant for.