I love simple ideas with a big impact. Here's one that strives to reduce debilitating injuries in hockey caused by people slamming or being slammed into the boards without warning. Tom Smith invented a simple warning line that paints the last 40 inches of a hockey rink bright orange to give a player warning that a solid object is close.
His 'Look-Up Line' costs $550 to install in a rink, 1000 times less than his own medical bills for six months.
June 6th, USA Hockey will vote on a measure to require this in all rinks. Let's hope it passes.