Go to O*NET Online page, once for each job, and use the "Occupation Quick Search". Yes, I know it's American but it provides an excellent collection of information for each occupation. For hobbies and other activities just pick an occupation or occupations that are similar. Not only will you get transferrable skills. You will also get hints about alternative occupations that you, or your client, might consider that involve similar skills or knowledge.
Again, since this is systematic you are less likely to leave good stuff out.