Kellogg proclaimed his love for the Californian wilderness while traveling in his carved redwood log home. He also claimed to be a vegetarian who chose not to own a gun and his outdoor skills included the ability to start a fire with a wooden drill. After discovering an 1867 treatise by John Tyndall that a small and regulated flame could be extinguished by a sound of the appropriate frequency, he claimed to have developed the technique to do this with his voice. He was also a skilled craftsman and an inventor. In 1924 he designed and patented a mechanized fruit and nut picker. He also designed a movable fireplace. Every time he visited his California home, he found that the forests were dwindling and along with his friends who included John Muir and John Burroughs he considered ways to highlight the loss. He ""kept thinking and thinking through many years how to take the forest out to the world ... the world could not come out to the forests"". After World War I he saw a powerful truck, a Nash Quad and decided to modify it by adding a body made from a 7 metre section of a redwood and carving it out with a bed, a toilet and a kitchen with cupboards. The wood weighed 3 tons and could not be lifted. He then dug a tunnel under the wood and drove the Nash Quad under it and then had the log body lowered onto it. He called his vehicle the "Travel Log" and drove it around at a maximum speed of about 8 km/hour. In later years he traveled in a lighter vehicle that he called the "Bird Wing" - something that he claimed would start when he whistled to it. He traveled at various times to the West Indies and Fiji where he observed a fire-walking ceremony. He also traveled to Paris where he met Auguste Rodin. later moved to live in a carved wooden cabin, "The Mushroom", in a place he called "Ever Ever Land." The cabin included all the amenities built to merge into the surrounding wilderness. He was taken care in later life by two of his sisters. They used his Travel Log as a sewing room and donated it in 1994 to the Humboldt Redwood Interpretive Association. Kellogg wrote an autobiographical book "Charles Kellogg, the nature singer, his book" (1929)"."