I often make tote bags for gifts, usually 6-8 identical ones. I make the first one completely, to double check the size and that I like the pattern, then I cut & sew the rest assembly line.
I guess I do something similar with a quilt top. If I'm not familiar with the pattern or not too sure about fabric placement, I'll make one block completely. Then I will create the rest assembly line. I seem to be more accurate this way and for some reason I hate having to go back and cut or make more of a specific patch. Like I made 436 flying geese, but actually needed 440. Drives me nuts.