Cardboard Lamp Shade or Ceiling light cover. NOTE: For ceiling light may require the light and cable to be removable. NOTE: For upright lamp may require some looking into safe materials to attach the shade to the lamp. You could just make it as tall as the lamp and attach it to the base. Depending on if it has a cable switch or a bulb switch this could mean turning the lamp on and off could get harder. NOTE: Try different coloured bulbs with different shapes and colours of cardboard.