With two varieties, red and white, oak is known to be easy to work with and relatively strong. However, furniture makers often opt for white oak over red oak for its attractive figure and moisture-resistance. Depending on the kind needed, oak can probably be found at a local home center or a lumberyard for a bit pricier than other hardwoods.
Along with stone, clay and animal parts, wood was one of the first materials worked by early humans. Microwear analysis of the Mousterian stone tools used by the Neanderthals show that many were used to work wood. The development of civilization was closely tied to the development of increasingly greater degrees of skill in working these materials.
You can transfer a graphic on any wood piece of your choice, including a frame, top of a table, etc. The surface should be clean and big enough for the graphic paper. I am also sharing a video tutorial here that explains in detail the process of transferring any graphic to a wooden surface using a freezer paper. Just gather the items you need and follow this video to carve your favorite designs on your favorite wood items.