Naughty kids

I got a package delivered the other night.  Inside was a bunch of bubble wrap. I told the kids that they could jump on it ( you know enjoy the fun noises).  The box also contained two huge plastic bags I also thought were bubble wrap, but I could not get to pop so, I put those back in the box.  I went upstairs and let the kids get to jumping.  I trusted they were being good and having fun until I heard them say
"yeah, it's snowing"!  I went downstairs and discovered this :