Arm the Vending Machines
Stop the killing.
The number of people killed by vending machines is admittedly low. But there's no reason we couldn't reduce that number to zero though. All we need to do is add long arms to them that would swing outwards as gravity tipped the machine forward. When the arms were out far enough they would hit the ground and keep the machine from falling further, preventing the death of the idiot who was tilting it to get his coke.