Like so many couples, Jon and Michelle Nagel regularly disagree about who is hogging more than their fair share of the bed. So Jon came up with an ingenious way to put that argument to rest for good: Jon purchased the laser for $35 on eBay. He installed it on the wall-mounted TV in their bedroom and used a tape measure to ensure the bed was split into two even halves. "The laser idea was inspired by playful teasing, no spite," Jon told The Huffington Post.