I have a friend who runs a day care from her home and asked if I would build her a busy board. I had never built one before, so she and my wife got together and determined what size it needed to be. Then we did some research to see what we could learn about what type of things needed to be incorporated. We built gadgets for left handed and right handed operation, a functional light made from an led flashlight and other fun stuff. The kids love it. It also has a collapsible stand so it can be folded up for storage.