Joshin had to submit a project on traffic signal for school project. We spend one full evening to make it.We used a cardboard box, empty bottle, black shining paper, black chart paper, shining paper(red, yellow,green) for lights, fevicol.
I found this model construction activity book in one of the local store. It turned out to be one fun activity for both myself and Joshin. It came out well and Joshin was proudly displaying to his apartment friends.