Some creature or creatures regularly (sunrise and sunset, summer and winter, lunar phases) or irregularly (solar and lunar eclipses, eschatological events) attack the luminaries or shade their light
During the time of creation particular species of animals (rare: plants) exchanged certain organs or traits or one animal borrowed an organ from another one but never brought it back. Thence the characteristics of these animals now. In rare cases the back exchange and restoring of the initial situation or the passing of certain organ from one animal to another without compensation are described
Creatures that produce rain and/or thunderstorms are birds or anthropomorphic beings with wings; or (rare) some or all birds are connected with thunder, lightning or rain though Thunder is not a bird
Rainbow is a flatulence of a demon, a spray of a skunk, is associated with spit, urine, feces, genitals, etc., causes skin diseases, is associated with death