I never thought I'd see it, but we have real graphics in our terminals. Granted, they're fonts with emoji the OS may render as an image, but the point stands.

The Homebrew team include their namesake beverage in output. Some bash burgers. Personally, I've started adding hot unicode beverages to script output, which OS X renders as a lovely emoji cup of coffee:

☕   Fluxing capacitors...
☕   Building dependencies...
☕   Grading zettai ryouiki...
☕   Changes now LIVE. Have a nice day

These visual markers really stand out in a sea of output. I've yet to push them into prod for anything other than personal deployments though; I don't think the world is ready for that.