Give (as in, "Give that to me!")
How are you?
Bobby (We have no idea who or what this refers to, but she says it quite clearly, and she says it a LOT.)
Side (this is how she tells me she wants to nurse; she wants a "side")
There you go.
I see you.
Fall (the verb, not the season)
Fork (I hope she never says this in public).
Mine (yes, she's possessive).
Pay (a funny story with this one, which I will share after the list)
Suck (said when she wants her pacifier)
Peep-poo (I've already blogged about this one)
Tortilla (new today!)
Cake (actually said in reference to a muffin, not actual cake)
There's probably more that I'm forgetting. :-p But I will say that Natalie combines several of these into sentences and phrases. Also of note is that "tickle," "thank you," and "there you go" sound pretty much the same the way she says them; you basically have to go by context as to which one she means.
She got a hold of my wallet awhile back and pulled out my debit card. She handed it to me and said, "Wanna pay?"
I'll try to add more if I think of them!