The first time Gaston did this, we thought it was hilarious. It was so unexpected: we thought he had no concept of gifts. He had never gotten excited about gifts at any birthdays or Christmases at this stage. He destroyed an ornament, but it demonstrated an understanding we never thought he had.
The second time Gaston did this, it was annoying. You'd think he'd have remembered his experience from the previous year.
The third time Gaston tried to do this, I had caught him just in time. What do you think was going through his head? "Oh boy, another tiny styrofoam cube to add to my collection. In another nine years, I'll have a whole tray of pretend ice cubes."