Create an environment
Giving your amigurumis an environment or scenography and adding them into a context will help the viewer to understand how you see your amigurumis and it will help to make them more personal.
We always see white backgrounds in many amigurumi photos. That can perhaps increase the visibility of your products and the chance to get in the front page of etsy, but let me tell you something: you spend all those hours imagining and recreating all kinds of beings in crochet and you will leave them without any kind of scenography?
Imagination
I would say that the labor of crocheting amigurumis is very rewarding per se, but even more if you can photograph your creations with sense of humor, with cuteness if you wish, or simply transmiting a story, a tale.
It is not hard to create a scenography. It is not hard to take photos of your amigurumis. You need mainly bottle corks, magazines, carton, cloth pieces, etcetera... Anything you find useful!