Combining math and the real world, students get to choose an object of their choice (as long as they can find at least 2 dimensions!) to make a scale drawing of. Students present their drawing on graph paper, choose a scale to use the entire project, and write a paragraph for why they chose the object and how they chose their scale. My students had a lot of fun with this. I suggest using this as a culminating activity, as well as giving at least one class day to work on it. Fairly easy & enjoyable to grade!