Instruction Manual
Choose a process (for an instruction set) that interests you and that you know a lot about. Include a summarized description of the product required for this process. Make sure to choose a process that is complicated enough to yield at least a page of description.
Here are some suggestions of processes that might work well for an assignment like this: how to change your oil, how to give an injection, how water treatment works, how to install a memory board in your computer. Please do not choose a recipe. Recipes are examples of technical writing but they usually do not provide the kind of writing challenge this assignment is looking for.
Avoid processes that are hard to quantify such as "planning the perfect vacation" or "falling in love."