I have used Thomas the Train and his little crackhead train friends to bribe my daughter into using the potty all.the.time.
Thank you, Thomas. Thank you, Chinese people who painted them with lead paint. Thank you, random person who somehow knew talking trains would appeal to children. Thank you, said talking train series inventor, for naming the train town "Sodor" which makes me think of "sodomy" which makes me giggle.
She's really growing up. Happily, I'm resisting successfully.