Googling Flying Eeveelutions for inspiration taught me that you can go two ways in terms of themes: clouds or bird-like features. I asked Elias (ex-intern) for some inspiration and he suggested the bat theme, since Eevee looks very mammal-like. I added some clouds for good measure though.
That only leaves Rock, Ground and Poison, I think. But those haven’t been requested yet so for now, we’re done with Eeveelutions.
Patrons can submit prompts for Fake Monday by commenting on the prompt-post I put up every Sunday, as well as voting in the poll of existing ideas! So if you want to submit your ideas for fake Pokémon, become a Patron!