The rough, saw-chewed top rails of most sawhorses can scratch finished wood or the painted surfaces on your projects. To provide a non-marring surface, cover the tops of your sawhorses with scraps of old carpet or rugs.
Measure the size of carpet pieces that you need to wrap around the top rails of your sawhorses. Use a straightedge and marker to draw your cut lines on the back of the carpet. Then use a sharp utility knife to cut the carpet along the lines. It may take a few passes with the knife to get through the tough woven backing.
Finally, use a staple gun to secure the carpet pieces to the sides of the top rails. Now you have a padded, non-marring work surface for all of your projects!