After I've washed and dried clothes I don't really like folding them, so I tend to just throw them in a big pile on the floor of my room and put them away later (be it a few days or a week). This has been going on for YEARS. One day when I was about 6, in my previous house, I asked my 3 year old sister to go and get a specific toy for me from my room, as I was busy setting something up. Now I had alot of stuffed animals from multiple trips to the zoo, and sometimes they would be on the floor and would end up underneath the huge piles of clothes in my room. Which was why nobody gave a second thought when my sister came back with the toy reporting a pair of eyes through the mass of clothes.
Later that night, after dinner, when me and my mom were going to my room for my bedtime routine, my window was open and the mesh that covers it had been cut open by what was probably a knife.