Have you thought about having a shower in the garden?
In beach houses are indispensable, pool are interesting, and even if your case is neither, already mentioned, find a corner in the garden and install a shower there, ideas abound.
I guarantee that not only will the children who will enjoy it.
Sinks for Garden
Ideal for those who like to tinker in the garden, so as to wash hands for tools.
Images via: http://casatreschic.blogspot.gr/