My father's birthday is coming up and he has just started to shave with a straight razor. He bought a kit that had a brush, oil, lather, and leather strap for sharpening already. Is there any thing else that would be good to buy him as a present?
You say strap for sharpening, so I assume he is a "straight" razor man, how about a nice stand? There's a guy in the BST section that does monogrammed brush/razor or combined stands for very little and they look superb.