Thinking about environmental sustainability when customizing your jewelry box can start with whether the materials used are environmentally friendly. Environmentally friendly materials are materials that are renewable, recyclable, biodegradable, or produced with minimal impact on the environment. Here are some eco-friendly materials commonly used in custom jewelry boxes.

1. Recycled cardboard: Recycled cardboard is a sustainable choice for jewelry box construction. It is made from post-consumer or post-industrial recycled paper, reducing the need for new raw materials.

2. FSC-certified wood: The Forest Stewardship Council (FSC) certifies sustainably managed forests and wood products. Choosing FSC-certified wood for your jewelry box ensures that the wood comes from responsibly managed forests.

3. Bamboo: Bamboo is a fast-growing renewable resource. Due to its sustainable growth and minimal impact on the environment, it is often used in environmentally friendly packaging.

4. Cork: Cork is a natural biodegradable material harvested from cork oak trees. It's a sustainable option for jewelry box lining or decoration.

5. Organic cotton: Organic cotton is grown without the use of synthetic pesticides or fertilizers, making it a more environmentally friendly choice for jewelry box linings or decorative elements.

6. Recycled fabric or leather: Using recycled fabric or leather as jewelry box lining is an environmentally friendly way to reuse materials and reduce waste.

7. Soy Ink: When adding printed designs or labels to jewelry boxes, choose soy ink. These inks are more environmentally friendly and less harmful than traditional petroleum-based inks.

8. Water-based adhesives: Water-based adhesives are a more sustainable alternative to solvent-based adhesives because they emit fewer volatile organic compounds (VOCs) and are less harmful to the environment.

9. Glass: Glass is a recyclable and durable material that can be used on top of jewelry boxes or as a display window.

When designing custom jewelry boxes using these materials, the entire life cycle of the product from procurement to disposal must be considered. Additionally, incorporating minimalist and reusable designs can further enhance the sustainability of your jewelry box.