Psychphysics / Psychology (Score 1)

Like computer science, experimental psychology is also still a relatively young field. Nowadays it has become less unacceptable to do research on consciousness. For now this is mostly restricted to what people are conscious of, or when they are conscious of it. Another interesting new topic is embodiment. You can do such experiments with cheap equipment. EEG would actually be pretty advanced (it has several huge advantages over fMRI that most researchers choose to ignore). What you could also do is build your own near-infrared spectroscopy setup and take a look inside your brain. Eye-movements could work if you get an infrared webcam. And I've actually done a psychophysical experiment with just a laptop, simply measuring reaction times to stimuli that no one has ever shown subjects. Good luck!