excellent idea. This concept should be implemented throughout India. It could even be tried out at Railway Stations. Let us allow private people to open Government authorized shops at all major stations. If we could have someone renting out lunch boxes at some Railway Stations, say for Rs.200/-, and the customer depositing the same at the end Railway Station, then we can simply minimize the use of plastic. For example, a customer pays Rs.200/- for one ever silver lunch box at Chennai and after completing his travel at New Delhi, he hands over the same to the shop nearby and gets back Rs200/-. All that needs to be done is to steam wash the lunch boxes. This way, hundreds of thousands of plastic covers and bags will not be used, thus saving the environment.