I was playing around with this flexible hose part, bent it and instantly this idea came into my mind. So I did a padlock with only eight parts ;) I'm very happy about the decision from Lo that the third round is again for all ;) Thanks!
Luuk, thank you very much for your congrats! Lego did the slopes in two versions, a hollow one and one with tubes inside. I used the second version so that the bricks stay in place easily. And the hose is very flexible.