If you are going to invest your hard earned money into a decent camera you should also get yourself a decent camera bag or backpack to carry it in. Cameras and accessories are fragile, delicate and expensive pieces of equipment and should be handled with care at all times.
Make sure your bag is big enough for all of your gear and that it has handles, a neck strap or shoulder strap for easy carrying. A good bag should have separate pouches for your lenses and other accessories. It should also be lightweight, but durable and have some padding in it. You should find yourself a waterproof camera bag to keep everything inside it dry. Make sure your bag is easily accessible and it's always a good idea to put your name in it or on it somewhere. A lock isn't a bad idea either.
Camera bags come in various sizes, shapes, styles, materials and colors. They range in price from about $10 to several hundred.