This was in nice suburb in New Zealand, so it was a bit of a surprise. The replacement window cost many times the value of what they took, and I was finding small pieces of glass for a while afterwards despite careful vacuuming.
Since then I'm more careful that there is nothing removable visible at all through windows. Ideally, anyone looking through the window should think I am the kind of compulsive person that carries every single thing inside each night. Unfortunately, the trick to making that work almost requires it to be true.