Hello, thank you for the chance
I drew my main ideas for the palettes. Except the yellow palette, I didn't have an idea, I just like that palette.
So I my main ideas are:
themed long eared demons with horns and tails that match the theme
themed/colorful kangaroos
anthro sea creatures
anthro sharks (fav shark, whale shark)
anthro insects/bugs
a ladybug kangaroo with ladybug wings and a beetle horn
you can choose the clothes, accessories, and hair/hair styles or anything else you want to do