All over the internet there are lists of weird and wonderful jobs, some of them are the sort of thing you could probably find easily, others are a little more esoteric. A lot are american though they are a useful starting point for research on other countries.
The rise of unusual jobs, an article by Hiscox describing how their business in professional insurance has started to see a lot of jobs that are new and unconventional.
Here are some more lists.
Quintessential Careers has found links to a number of specialist job sites for seasonal jobs ranging from theme park work to ski jobs.
Student jobs with a difference by Mookychick
Fun jobs from Yahoo
Unusual jobs at Employment Spot
Unusual Jobs has a range of articles on different careers, though there are a lot of adverts on the page. Their affiliate Dream Jobs has more articles and links to more affiliated pages at the bottom.
This list of strange jobs by an American blogger is a good place to look for ideas.
Job Monkey lists a lot of odd jobs and also offer some tips on finding the job of your dreams.
If you're flush, or have some pull at a library you could purchase some of the books in this series.