Macaws:
-stained glass wings
-antique/vintage bird illustrations (think Audobon and other artists from that time)
-book/paper looking wings?
-based on the way the sky looks at different times of day
-extinct birds
Syrian Hamsters:
-a litter based on obscure/strange rodents
-idk how to describe this idea, but a litter based on those little glass figureens? (Ie.
https://www.ebay.com/itm/355803363599)
-we've had hamsters based on bears, cats and dogs, but what about traditional horse patterns/colors
Rabbits:
-litter based on wild rabbit species that don't have existing pet designs
-using the "squirrel" lineart edit to make different species of squirrels (seriously - there are species all across the world, and some of them are really interestingly colored)
- Bunnies based on the different egg tokens of each year?
Chameleons:
-idk how it would work, but sequins instead of scales...
-gargoyles/grotesques (statues on churches and other buildings, mostly in Europe)
-there's so many interesting looking reptiles who's patterns could look interesting on the chameleons