This is a small slip that you can attach to your student's homework sheets. This lets the parent know that they need to complete the homework and sign the ticket when the homework is completed. When the homework is completed and the ticket is signed, the student brings them both back to school. In my classroom, they are then rewarded for completing the homework and getting the parent signature. It lets me know that the parent saw the assignment.
I typically print the tickets onto colored paper to make them stand out on the homework sheets.