How to come up with a mythical critter idea

When you start making mythical creatures every once in a while you get the desire to make one. But which one, there are tons of them? No need to get nervous wondering what creature to make. Wikipedia always helps. Here is a link to a particularly helpful list of species in folklore and mythology. They are listed alphabetically and there is an image provided for most of them which makes a good starting point for a mythical creature polymer clay project.
On another note learning about the myths and legends of other cultures is really, really fun. Well, at least for me (Boris) it is. You may discard some of the listed creatures as too complex to make, or too easy to make, or not enough interesting to make, but anyway the list is huge. I am quite sure you will find the creature you like and then start playing with the clay.