I have a 17 month old, who isn't potty trained, but I've been working with her since her 1st birthday. We got her the seat for the regular toilet and a video called "Potty Power". She loves the video and the other day told me "pee-pee" while touching her diaper, which turned out to be soaked. I'm hoping it happens more often. As for the seat, it's an Elmo one, just like the Dora one, and she as been asking for 'Elmo' since she was just 13 months old so I sit her on it, even with her clothes on. It's easy to clean off, too, so she can play with it. They also have fold up seats and plastic seat covers, that are larger than the paper ones, for your diaper bag once your daughter gets trained.