A couple of weeks ago, CC decided that she wanted to fly. She dug out a large piece of cardboard, designed her wings and got hubby to help her cut them out. She figured out how to attach them and then tried to fly. She decided that her wings weren't big enough so she and hubby got a large piece of foam board and she started over. This afternoon she was ready to try it out again. She said she had some lift while she was trying. I just love seeing the excitement of invention in children's faces.