Take your students on a walk to "read" license plates (identify their letters and numbers). In class, they can create their own using this template. All 50 states are included. There are seven light grey boxes distributed across the space to help writers evenly space their characters and keep them the same size. You can limit the character choices to specific letters and numbers you are studying if you want the activity to double as a quiz!
I also have a free download that is just a California plate.