These giant erasable notes are so much fun.
You could use a white board if you have one or this plastic sheeting from a home supply store.
I cut it in half so I would have 2 memo boards.
I used a pink and blue Sharpie marker,
and drew these permanent lines on it,
and added the 3 hole punches.
Write your messages or doodles on with a dry erase marker and you can easily change or update it (my handwriting was too messy so I had to employ photoshop :-)