I learned Polish mostly by telling jokes and having people tell jokes to me. Fortunately both Polish and Dutch have a near endless repertoire of them. Many jokes rely on language skills in order to be funny you have to at least get to the point where it can be explained to you. And of course, the immediate pay-off is that you'll hear a funny joke which is good for short term motivation.

Beyond that humor is very much cultural and learning a language through humor immediately exposes you to the culture in a way that talking about current events would not.