How to create staff lines on a white board

Have any of you had a music classroom without any permanent staff lines on your whiteboard? I have been in a few schools like that, and I have made my own in less than 15 minutes with pin striping from an auto parts store. Even if you have staves in your room, you might like a 3 line staff for your first graders or a staff in a different section that works better for your teaching. Watch the video to see how easy it really is and make your life so much easier by next week!