Read the assignment over carefully to make sure you know what types of topics are acceptable.
Choose to work on something that is interesting to you! Sometimes this is something with which you have a personal connection. Sometimes this is something that you know nothing about, but have always wanted to learn.
Brainstorm! Let the ideas flow freely and then refine.
Check your textbook for ideas
Reach out to Librarian Liz to get feedback on your possible topics. Write to lgg@spu.edu