You can use #6 plastic takeout containers (polystyrene) as a cost-effective substitute. 2. Design and Preparation
Colors intensify and darken significantly after shrinking. If printing, it is recommended to reduce image opacity to 50% for a better final result.
Use permanent markers, colored pencils, or acrylic markers. Avoid wax-based crayons or pastels, as they will melt in the oven.