When building wheels, keep a couple alligator clips on hand. We've all dropped the spoke wrench, answered the phone, or checked out the MILF walking past the window only to discover the wheel has rotated in the stand while your eyes were diverted, and you have lost track of which spoke you were working on. As soon as you drop the spoke wrench, attach the clip to the exact spoke you were working on. Then you can take your eyes off the wheel, find the wrench, and if the wheel has rotated in the stand, you just find the spoke with the clip attached, and you haven't lost your place. The clip also works well for detecting spoke twist.