Recommendations for sets with interesting mechanical gimmicks?

I'm looking for new sets with neat gimmicks. I have the Lucky Cat with its arm swinging mechanism. Got the Gameboy with the tactile buttons and lenticulars. I got Lego Bumblebee because transforming is cool (Soundwave is better of course but expensive). Got my first lightbrick in the pumpkin. I've seen planes with retractable landing gear, sets with trap doors, the amazing mechanized lighthouse, the new rotating Project Hail Mary set, the incredible Voltron combiner, the piano and the...