Rotifers are tiny animal lifeforms which are distantly related to arthropods. They're transparent, cup-shaped creatures which can be viewed under a microscope. Most of the images I found showed and labeled the rotifer's internal structures and I attempted to recreate this in clay. Clay is not transparent of course, so it came out looking like the end results of a rotifer dissection.
Some of the structures match what I saw in images and others are added just to make it look like there's a lot going on in there.
These are my source images: