I'd say you are dreaming. Any BB is a business device first and foremost so chances of getting a case like that is slim to none. But you can get a case and go to a place like walmart and go to their arts and crafts department and find something to do it yourself. I'm sure you can find fancy pens, glitter glue and many other of the things you mentioned.
There are a lot of case choices out there. But, fuzzy I have never seen. I have seen multi-color is about the wildest that I have seen. If you do a google search there are a ton of results that come up.
"Imagination is more important than knowledge." - Albert Einstein