I present to you two broo-versible sweaters I recently made for my son from scrap and left-over yarn. They are not reversible in the sense that they can be worn on the inside out, as "reversible" clothing items usually are. These sweaters have no front nor back, so they can be worn with either color facing forward.
Again, T-shape, basic stitches, and easy as 1, 2, 3. Click on each image to enlarge.