The best eco-board for furniture making is typically bamboo plywood. Bamboo is a highly renewable resource that grows rapidly, making it an environmentally friendly choice. According to the U.S. Forest Service, bamboo can grow up to 3 feet per day, which is significantly faster than traditional hardwoods like oak or maple. This rapid growth rate allows for a more sustainable harvest, reducing the environmental impact compared to other materials. Bamboo plywood is also known for its durability, strength, and aesthetic appeal, making it a popular choice among furniture manufacturers and DIY enthusiasts alike.