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Do you suppose the little marshmallow has any idea what his "friends" have in mind for him? Use the swatch view to see what the Graham cracker and the chocolate bar are carrying.
See a version without the personification here.
Wallpaper Coverage Calculator
Based on the dimensions you provide, this calculator will determine the number of custom-length sections of paper you'll need to cover any surface. If the height of your surface varies, input the tallest dimension in order for the pattern to line up correctly.
Enter your dimensions in feet (1 foot is 30.48 cm).