Hate miters? Try this miterless alternative
In the same way that corner blocks eliminate mitered door-casing corners, these corner blocks eliminate outside corner miters in baseboard moldings. They also withstand bumps from shoes and vacuum cleaners. To make them, cut blanks about 1" to 1 1⁄2 " square, and add a 1⁄8 " round-over to the three exposed edges. For a decorative touch, rout a profile on the top end on all four faces. Then add a 1⁄4 " notch for outside corners or a chamfer for inside corners to allow for drywall imperfections.
—from the WOOD shop