Husband doesn't like texture, so cables are out of the question. And certainly he abhors lace for a man's garment! He doesn't like bold and bright colours. The result? This pair of Classy Slip-Up socks in a very conservative colour:
The pattern is not too challenging but better than stockinette stitch all along. And he has worn them to work this morning! If you think one is bigger than the other, don't worry, it's just visual illusion. They are of the same size, I assure you.