I bought Judith 4 little wooden puzzles for her birthday (which is next month). Of course she found them, and I told her she wasn't supposed to have them until she was 3. But she was insistent so I let her have one. I've never seen her focus on something so intently for so long, and she did it! She's never tried a puzzle like that before.
Upon completing it, she looked at me and matter-of-factly stated "Mommy, I am 3."
She loves this puzzle. She does it all the time now. It totally seems to be her "thing". It is a skill she must get from her father, as I'm not much of a puzzle-person.
Before watching, please note: this was first thing in the morning, so it's dark, Judith is in her pj's and has morning hair. And the tv is on in the background, please excuse the music.