Great composting materials for a garden include fruit and vegetable scraps, coffee grounds, eggshells, leaves, grass clippings, and small amounts of paper or cardboard. Avoid meat, dairy, and oily foods in your compost pile. A balance between “green” (nitrogen-rich) and “brown” (carbon-rich) materials is key for successful composting.
The Ultimate Guide To Composting For Beginners
https://www.gardeningknowhow.com/composting/basics/ultimate-beginners-guide-composting.htm