If you are looking for a child-safe, low maintenance, low budget feature that can easily adapt itself to your individual taste, then this is the one for you. Siting is flexible -- you can even build this type indoors.

The downside is that you can't keep fish in this one!

One of the best ways to create a meditative atmosphere is to use a still
water feature -- a tranquil pool situated in a quiet corner where the
surrounding plantings are lush greens and soft textures.

A tub garden need not be filtered or circulated unless you want several fish or the sound of running water.