These clever people are using shipping containers, dumpsters and rubbish skips to create family pools at low cost. And you can take them with you if you move! Here are the pools they made --> http://theownerbuildernetwork.co/n74b
Modpools have transformed shipping containers into modern swimming pools with a window. Each pool can be set up in minutes, be made into a hot tub and can be controlled via your smartphone, where you can change the temperature, jets and lighting.