Have you seen this? So sad. I bolted the furniture in my child's room for this very reason. Its the only place they are alone for long periods of time unmonitored in my house. TV's are a big culprit as well as seen the video in this article. Make sure they are on a secure surface and pushed back as far as possible.

http://www.washingtonpost.com/news/morning-mix/wp/2015/07/23/ikea-a-tipped-over-dresser-and-a-toddlers-tragic-death/