I have a proposal for the artist known as Banksy. It would require a brief exchange of details for you to ponder, it probably isn't what you expect it would be, you can retain your anonymity and it would be a stretch for people's expectations of you that I think you would appreciate and no it isn't about decorating one of my instruments, nor robbing a bank.
Now......let's see if this can worm it's way out there..........