There was an early idea for the bug living room where it was going to be a natural history museum of sorts, with stuffed animals and display cases to show off entomological wonders. That idea changed into what it is in the film, but there is still an element of that first idea that you see for maybe ten frames in the final movie. On one of the walls is a display case with a bunch of bugs pinned inside of it. If you blink, you'll miss it, but the actual prop was one of the most gorgeous props made for the film and I wish it had more screen time.
These are designs for the bugs that are on display in the case.
Image (c) LAIKA Entertainment