My teacher uses a Noise Meter similar to this one. The Noise Meter is a cool way to remind students the correct noise level that they should be using! You just use the paper clip and move it to the appropriate noise level the students should be using.
Use the African orange n blue material? No cabinet doors whatsoever. Very functional - we know because we don't ha wood door in our kitchen either. Love the way these cabinet curtains blend with the "color value" of the wood floor!