When looking unsuccessfully for something, she'll say, "Ummm, nope!" with each place she looks.
As we drive past houses with lights up, I hear an excited, "Oh! Oh! Ah ah more merry Christmas lights!" as she points to each and every display (no matter how small).
She randomly inserts specific parts of Little Einstein episodes into conversation. "Baby chimp ah down down down down, waterfall!" as she wiggles her fingers like the chimp does.
When she's picking up her toys, she sings, "Keen up, keen up, keen up, keen up, body keen up.." I can't stand that purple dinosaur, but her version of the song is pretty darn cute.
We've had a grand total of maybe two inches of snow so far this winter, but she's enjoyed it. We got out the snowpants from last winter (which fit perfectly this year, yay) and went outside to "dig in the snow". Throwing snowballs was her favorite, I think.