Shelevator, an Elevator for Your Shelf

I was inspired to do this when I saw my senior mother standing on a stool to reach something in the kitchen. I was worried she might fall. Although, anyone could make one in a good workshop, I wanted to make it easy for anyone who might not have access to all the required tools, so I have made the harder things available through some kits on eBay. It was recently featured on Discovery Channel Canada - Daily Planet, Feb. 15, 2012, part 3.