This first one is "psychogeometrics." Go here and pick the shape you are most drawn to. If you want to really test the test, before you click on it to read about yourself (!), take a short questionnaire (not visual) here and see if the shape it picks for you matches what you chose by look alone. (Mine: "You appear to be a complex personality. Or perhaps you didn't take the questions seriously.")
Then, for a really visual one, take the Dewey color test. This one is entirely based on response to colors, and comes with an interesting color chart for the month, kind of like biorhythms in flavor but all in hues.
I found out about the latter because another former colleague of mine dropped out of interface design management to become a color and interior design consultant, and she uses the Dewey system. She says she got sick of fighting for good software. That makes 4 colleagues (2 junior, 2 exec level) who have quit the UI design fight in mid-career. Who's next? Are other software professions like this?