I have a male parrot, you won't find crazier than that. It's a hyperactive asshat with bonus capability of flying.

I guess finding what a certain specie of pet finds maximum of entertainment would be great.

In a case of a parrot, he requires a company, likes mirrors, any shiny objects, including devices such as phones and laptops are always in focus, splashing in water and enough space to fly meaning the entire flat essentially.