You're not really in the Northeast, and you won't find arborvitae, or J. horizontalis growing wild in West Virginia, though you can find them in nurseries. I'm not 100% sure what you mean by "hardwood", but some deciduous trees like hornbeam, beech, hawthorn and others can be found in the woods and can make descent to great bonsai material. Seeing what grows in the landscape is a good idea, too. However, most native "hardwoods", including maples, oaks, walnut, hickory, etc., typically are difficult to make mediocre bonsai at best.