5/3/1 and Crossfit by the Book

I’m wondering what sorts of Crossfit style pairings people have come up with using the advice given in the 2nd Edition of 5/3/1.
I know that Jim gives an example of ideas for both upper and lower body days, but I want to be sure to vary the workouts. I also know that he gives examples of exercises in the book, but I’m wary of just pulling names from a hat, because I feel like certain exercises will inherently compliment the day’s main lift better than others.
Any ideas from the community?