Here are some prop designs for the real version of Bobinsky's attic. Even though the big concept for the set contains a lot of props, it's still important to go in and break out each prop and describe it in better detail so that the model makers have good reference for what they're supposed to build. The clearer it is in illustration form, the more accurate it'll be to the concept in the final output.
Also, with the design of these props I tried to give Bobinsky some history that is never explicitly stated in the film by making them seem like relics from a distant past he may have had working in the circus.
Images (c) LAIKA Entertainment