Can't think of any I made myself, but my friend made one for a project of mine that was pretty great. So, I have a shapeshifter species where their base species is whatever their non-shapeshifter parent is, so they take on characteristics of that species no matter what form they take. One of these characteristics is intelligence, which is why my main shapeshifter character is a crow, since they are very intelligent. However, when discussing this with my friend, I joked that this would really suck for a shapeshifter born as something like a fruit fly. So, naturally, she made a fruit fly shapeshifter. I forget what she named it, which is really too bad, because it was great and I'm totally going to use it as soon as I get a chance.