I see it, I say it
I guess when you’re 2 and learning how to speak, the best way to practice is to speak whenever you can. Since the vocabulary is limited, the best way to fill the silence is to repeat. To make it interesting, you can increase the volume until someone acknowledges you. Or even if they don’t acknowledge you, it’s always fun just to keep naming whatever you see as loud as you can – repeatedly.
And then when they learn to speak well, it’s a good idea to keep watch to attempt to divert their attention when you see something you KNOW they will comment on. Once when we were entering the supermarket during the summer, Big Mochi saw a woman up ahead wearing a tight low-cut tank top exposing a very large bosom and she asks Baby Mochi **very loudly** if she was hungry. 
Or that time when we were visiting Baby Mochi in the NICU walking past an elderly woman who was in a wheelchair and Big Mochi declares it’s a lady in a stroller…
31) It’s not entirely true when they say you want your kids to stand, walk and talk - and once they do, you just want them to sit down, keep still and shutup. Not all the time, anyway.
Kidding!