As ever, it depends on what parts you're trying to do with them and what other tools you might have to use. I made my 2005 box using only a table saw, including the beveled edge on the door/wall panels. However... If you want to, you'd possibly want a 45 degree bit to do the door panels (knowing that you'll need to chisel out the corners on each side, as per the 2005 box), and you might want a narrow straight bit to do the detail line/recess up the outer face of the corner posts. There are several ways to achieve each piece but if using a router it shouldn't be too hard - just be very very careful, set good guides and wear a good mask!