Need Advice on Tattoo

Hello! I have a Hitchhiker's Guide to the Galaxy tattoo with a Venn diagram of Life, the Universe, and Everything. I have video game controllers for Life, the Enterprise-D for the Universe, and various books with fandoms on them (Hunger Games, Dr. Who, Supernatural,etc) for Everything. I have blanks between the categories, but have an idea for what to put between Life/Everything and between Live/Universe. I would like a Muppet themed section for Universe/Everything, but have no idea what to put. Right now, I'm leaning Bunsen and Beaker, but not sure. Any ideas or suggestions?