Almost anything you can imagine. In general, senior theses fall into three categories, but there are always wonderful projects that don't fit these definitions. Research theses investigate a problem or a question in the humanities, social sciences, or business, or some combination thereof. They depend on original research and the use of primary sources. Primary sources provide evidence produced by the subjects you are studying and allow you to develop your own conclusions rather than relying on the analyses and judgments of other scholars.
Technical theses are reports on experiments in science and engineering.
They often develop out of research done in a professor's laboratory. Creative theses may take whatever form you are prepared to work in. We have seen sets of short stories or poems, films or videos, portfolios or exhibitions of paintings or photographs, performances of music, drama, or dance, and hypertext or interactive computer programs for teaching or entertainment. We recommend the year-long thesis, even if you are not seeking to graduate with special honors. If you do choose to write your thesis in one semester, plan ahead.