My kids were having trouble limiting their showers to three minutes. To help combat this problem, I now place a plastic nine litre bucket in the shower. Once this has been filled up two or three times my kids know its time for the shower to go off. If they want they can play with the last bucket of water. I did have a shower timer unfortunately it was not getting used, so I came up with this solution.
Posted anonymously, 30th April 2015