Put things away properly

I was in office today and this afternoon heard a loud crash.  Apparently an improperly stowed bag with many tools and related accessories was not put completely onto a shelf in our copy/office supply room  and gravity did the rest.  No people were in the room when it happened.  The hazard it created was dealt with, proper reporting for site is being accomplished.  Just want to put this warning out that when returning things from where they came, make sure they are secure within their proper location.  I also want to ask if you hear anything weird, check to see what it is.  I was a little concerned nobody else responded.