No one said you had to be straight forward. You know what I said when they asked me about it? Carpentry (scales) and metalwork (honing, grinding). My interviewer asked me what I did with it specifically, and I just said ornamental heirloom knives, besides other carpentry and metalwork. It's not a lie, but you can get away with heirloom knives far easier than straight razors.
I know a guy that got a great job because he listed mountain biking on his application under hobbies. It turned out the head honcho that read the applications also did mountain biking. Bada bing!