Hello Kelly,
We use colored pencils and golf pencils in our gallery currently. We have used crayons and even markers in the past, but those both can be messy. We have both colored pencils and golf pencils at coloring stations throughout the gallery and in our education center. We haven't had issues with people using them inappropriately in the gallery, but they have colored on our mural in the education center.
I find that the Mr. Clean Magic Eraser takes care of any errant marks though.
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Nicole Laws
Youth and Family Programs Manager
Country Music Hall of Fame® and Museum
Nashville TN
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