Build Your Own Red Meat
Red Meat is a comic strip that features characters that look the same every time they appear. I've re-discovered a website that allows you to create your own Red Meat comics.
You can try it here: http://monkeydyne.com/rmcs/buildmeat.html
You have to use a screen capture tool if you want to save it though. Screen Grab Pro by traction software is free and works on Windows.