For sheer parenting joy, it is really hard to beat Halloween with a toddler. Ella has been talking about it for weeks, and insisted that what you say at the door is "trick-or-treating."
She appears to have a photographic memory for candy and refused to get a duplicate of any candy bar she already had, politely but firmly telling the giver, "I already have dat one." The first woman didn't seem to believe that Ella would actually know whether or not she already had a Kit-Kat bar, so Ella dug it out of the bottom of the bucket and held it up as proof.
She also much preferred being able to choose her own candy, and if the person just handed her one, she'd come back and tell us, "that guy just give me one. I not choose my own."
And after each house, she'd look down the street in amazement and say, "There be ANOTHER house?" As the evening progressed, she'd look into her bucket and exclaim, "I have tons!" (In reality, I think she only got about 20 items, but to our child who never sees more than two candy items at a time, it probably did seem like TONS).
We let her eat two pieces on the way home and I think it was clearly the best night of her life thus far. After we put her to bed, she talked animatedly to her stuffed animals for a good fifteen minutes, her voice rising with excitement every few words.