This is a neat idea, the problem could be that this is an interesting job so it might be followed by what have you written? Maybe proofreader or web design consultant, both somewhat related to the job might be blanket answers.

To my mind the best answers are personalized, and unless you have a real vanilla job should be related to a real hobby, and something you consider doing when retiring. Best combination should be something a little technical to the area, and not particularly interesting to the general public.