Voice meters can be easily made with minimal materials.
Materials needed include: paper or oak tag, colored markers, pencils or crayons and protective covering for the meter; such as contact paper, clear packaging tape, laminate or a sheet protector.
One example of a voice meter is a rectangular strip of paper with the numbers 1-5 aligned vertically in squares on the paper. Numbers are placed in squares with 1 on the bottom and 5 on the top. Each number square is colored graded shades of blue, with 1 being the lightest color and 5 the darkest shade. Each number represents a volume level:
2 = whisper
3 = normal conversational volume
4 = loud talking
5 = yelling or screaming.