My partner's lorikeet LOVES his bird bath. He has a stainless steel bowl that hooks onto the side of the cage for his bath. My 'tiels have the exact same bowl but it's for their drinking water, and they wouldn't dare take a bath in it -- the only way they like their shower is outside, with a spray bottle.
I use the cockatiel sized baths that hang on the side. But I also mist my birds and they have Tupperware containers about 1 inch deep with water on the floor for bathing. Some don't like the ones on the cage. Some only like misting. That's why I do both. So everyone is happy.