Well, you can't really see him, he's about the size of a large rice grain, but I have a single brine shrimp named Dewey who lives in a self contained ecosystem as seen on the left side of the photo. If you're not familiar with those, it's a closed habitat that perpetuates it's own balance so long as you allow it some indirect access to sunlight. Inside, algae grows that offers oxygen and food for Dewey.
Dewey originally belonged to the building manager at my work. During a QA session where I was feeling rather slap happy, I asked him about it and if he named it. He said no and challenged me to do it. So I drew a picture of Dewey in the process and his response was what you're seeing there.
A month later, the building manager was transferring to California and asked for me. In short, he gave me Dewey and now the little guy lives on my lamp table where I can make sure he gets some light for his little home. I check on him daily.