I love solving puzzles. This can be done literally, in the form of jigsaw puzzles, but also, for example, in the form of programming. For example, I recently started developing (a big word in this context) Android apps. The first result is the WBSO App. This gives a quick insight into the advantage that the WBSO can mean for you.
Even as a grant consultant, it is sometimes nice puzzling. The puzzles I encounter often have to do with getting the project idea and grant scheme to fit together and creating the ideal project structure so that all the pieces of the puzzle fall into place.