When Dorothy hugs Tik-Tok as he sheds a tear of oil at the predicament of becoming an ornament.
The Nome King's Pet the Dog moment: comforting Dorothy as she cries about the loss of the Scarecrow. If you look closely at his face during this scene, he actually sheds a tear- of stone, albeit- indicating that for a moment, he felt genuine sympathy for her.
With this scene in mind, one almost has to wonder if his offer to let her out of the game and just send her home wasn't a ploy for manipulation, but a genuine offer.
Dorothy's farewell to Jack and Billina just before they enter the Ornament Collection.
Following the climax, Dorothy's sheer relief at seeing Oz restored and Tik-Tok returned to normal.