What is it?

Here's a question out there for anybody who might find their way here and read this blog. The picture posted here is the avatar that I use for my Etsy shop. I have always used it but it recently dawned on me that most people who see it may not even know what it is. It looks like a bunch of colorful circles but do you know what it is? Take your guesses in the comment section. I would love to hear what you think!