I use ceramic pie pans , old frying pans , big plant saucers , ceramic bowls in upside down tomato cages as many as I can maintain ,
which right now is a frying pan for drinking with wire fencing over it to keep them from splashing it all out every five seconds.
and the two tomato cage ceramic bowls one with a big rock and one without ,
and our waterfall fountain , running water is a definite draw to wildlife.
I definitely recommend a long handle soft bristle scrub brush for algae
and maybe a small fish net to scoop seeds and things out of otherwise clean water
the net is mainly for the fountain but I use it on birdbaths sometimes.
and a heater for winter , lol