Fun with a Foil Blanket

Ruby spotted the foil (survival) blanket today but couldn't reach it to get it out. She used to play with it, loved the noise of the crinkling foil. 
I got it out and it turns out that Eric thinks it's a lot of fun too.
I'm going to order a couple for my bike, to keep in the pannier where I have a small first aid kit. You just never know when they (the first aid kit) might be handy if you come across an accident.