I used to have students make the organelle brochure where they would compare parts of a cell to a city, an amusement park, etc. However, I found that there are too many samples of that project available online, and work was not original.
To remedy this, I have students create a catalog to "sell" organelles to a cell. I also provide a build-a-model option to those who are not good with computers or simply like doing things more hands-on.
My document includes the instructions/requirements for doing both the model and the catalog, as well as a grading rubric (out of 60 points) for the project.