DD is 20.5 months. She can say
Mama, Dada, cat, dog, duck, ball, bye, night-night, bed, pig, go, no, yes, milk, yum, thankyou, please, cake, banana, apple, orange, pear, star, spoon, horse, up, down, doll, Iggle & Daisy (as in Iggle Piggle & Upsy Daisy), dinosaur, bee, one, two, three, four, bag, bubble, jump, dance, stairs, cow, kiss, stuck, sheep, hat, bird, car, book, gone, oh dear, door, snake, tree, sock, shoe, teddy, bear, eye, good-bye, baby.
I think that's it. Some of them aren't pronounced perfectly yet though. She also signs quite a few of them as she only started talking properly a few weeks ago & we encouraged signing so she could communicate with us & avoid her absolutely epic tantrums. It did help, a lot, tantrums disappeared almost overnight. There are also a few things she can sign but can't say.