If you don't like our cute little cranky bird here are some more options:
Take what you want. These were created by Tabz when we were coming up with an icon for the blogroll.
Also,Wystful 1 has an icon that she created.
Also, instead of writing an announcement about the group you could post this:
Isn't cute? This was created by G a b r i e l l e. I love being on a blogroll with creative people.