1. There is a light on the can to help you see at night. 2. The idea was to make the stands look like decorative vases so they would blend in as furniture. But it would be important to strategically locate them in places where they aren't a tripping hazard. To initially test this idea we would want to use a more controlled environment like a nursing home so we could work out some of these bugs.
I deffinently think it is important that the elderly have access to low impact excercises. I know in the past when I had a herniated disk my doctor said it was important to exercise my back and core. They are deffinently a lot of classes for the elderly at your local YMCA, but a cool thing I saw when I was in HK is that there are a lot of simple exercise machines in local parks and squares that are commonly used by the elderly and are completely free.