For a Dutch project called 'LEUK.' - which means something like 'fun' or 'nice'. Each letter represents an important piece of the method. Essentially, LEUK is used as a method and of thinking and working. And used as a way of looking at things and approaching difficult matters and influence decision making.
The L is for 'logic', the E for 'ethical', the U for 'universal' and the K for 'Kingly' or 'Royal'.  

"Every activity should make sense (= Logic), should pass the ethics test (= Ethical), not a select few, but everyone (= Universal) should benefit from it and the total is expected to be just, legal, transparent and sincere (= Kingly/royal)."

The method itself seems very serious and business-like - apart from it called 'leuk', as the word implies fun. That's why the client wanted it all to feel fun, colorful, happy but professional-looking. 

The first concept drawings of the four letters. The first picture are the drawings from Marc, the project manager. He drew those when brainstorming about the idea with the client before collaborating with me. His note "liefst zonder poppetjes denk", means "preferably without little figures, I think". So he wanted to leave out the little stick-figures, but still representing the thing they were doing. After talking to me and discussing the ideas, of what the letters should represent, my concept drawings came in (as seen in picture 2).

As seen in picture 1 and 2, the puzzle for the L was quite a logical (ha!) decision, no doubt about that one. The E was somewhat difficult. What do you think about when you hear the word 'ethical'? For me, it was brains, the mind, thinking and decision-making. For Marc it was 'all things good'.
So we came up with the idea of heaven/hell, good and bad, splitting roads and scales. I made 2 other versions of the E after this session. Picture 4 suggests a red and blue road, a 'choice' in either direction. The last picture is the heaven/hell version. We discussed this and my opinion was that I didn't really like the idea of including the piece of 'hell'. So, we left that out, so it became more positive. I didn't drew out the final result by hand, but went straight to digital.

So, a recap of the feedback and conclusions of my first concept drawings:

The L representing a puzzle is very different than the rest, as it is a rectangle and includes a hand. The U and K are far more simple. The E is also a very different style than the other 3, more complicated and not as playful as the others. Those were the two who needed a little more help and tweaking.

As seen in picture 3, I drew the puzzle inside the letter rather than around it. Some different versions (normal puzzle-pieces and one with L-shaped pieces). Which made it more cohesive with the simplicity of the K and U. The E was also made more simple and resulted in the one on picture 5, but without the part that represents 'hell', as seen in the final result.