I provide a lot of visuals throughout our day. I have created a simple double-sided visual that I have stationed at all of my work centers. On one side, it is a simple yes/no choice. This is used with both verbal and non-verbal students. On the opposite side I provide 3 choices: I need help, I'm finished, Leave me alone. These are stationed at every work table so that we can quickly pull them out to provide support for our students.
These visuals are a necessity in my classroom! They have stopped many students on the verge of tantrum and helped students communicate their needs.