Level 7 definitely had me thinking it wasn’t possible for quite a while before I finally put the final pieces together. Glad you left the note about level 3 or I might have spent a fair amount of time questioning my sanity trying to solve it. Otherwise, I really like the idea of winding up a clockwork toy as an interpretation of the theme!
I did run into the bug where the spikes fail to raise/lower when you step on a button. It seems to happen whenever you restart the level while a button is currently held down. Wanted to mention in case anyone else gets stuck on this.