Build your own solar powered water heater, by using your own old fridge. Yes this is a way where not only can you get rid of all of those old refrigerators but you will be getting hot water as well.
This is a right nifty little idea, where recycling can lead to producing something else that is very practical for your home. The instructions are easy to follow and if you are that way inclined and have all of the handyman skills needed to complete the job.
Source [Eco Friendly]