The ring that Emma wins when playing the crane machine with Ingrid is the same ring that Hook picks up when looking through Emma's box of childhood memories in episode 5 of this season.
Possible foreshadowing: When Mr. Gold leaves his store at the end of the episode, the 'C' and the 'D' on the 'CLOSED' sign are not visible because of the frames of the panes of glass on the door. The sign therefore says 'LOSE'.