I thought we should try to give Corinne a sippy cup the other day, so I put a little bit of water in it and gave it to her. She looked at me like "what do you want me to do with this?" I just let her play with it for a while to see what she would do. She never did figure out how to drink it, but she at least thought it was an entertaining toy. And even when I showed her how to put it in her mouth she couldn't figure out how to drink it. The good news is she doesn't need to have water or to be able to drink out of it yet, so it was a good practice session.