It started with Elmo. She began making her Elmo doll blow kisses to her about 2 or 3 weeks ago. She would take Elmo's hand, press it to Elmo's mouth, make a "kissing" sound, and then move Elmo's hand away from Elmo's face and toward her.
After that, she started putting her baby doll into the high chair. She'd then go get some of her fake plastic food and hold it up to the doll's mouth and say "Mmmm".
Next came putting Mr. Bear (her teddy bear) to bed. (See the video.)
In the video, I'm talking to her to keep her on track for the purpose of making the video shorter than an hour, but actually the origin of all of these activities was Mira and Mira alone. After I discovered her doing these things, then I would talk to her about them and encourage her to continue playing and pretending, but I didn't prompt her to begin doing them in any way. She had the idea all on her own, which is pretty neat.