In the interest of more topics that relate to regression other than just diapers...
What are some foods (other than babyfood, as i'm sure not many people here have an overwhelming affinity for smashed peas and carrots) that make you feel, "Little," And / or, "Cubby?"
For me, i think a lot of the more unhealthy foods do it... When i turned 7, my mother became obsessed with the study of health and nutrition, and (to my horror at the time) removed all sugar from my diet as well as most other unhealthful foods.
So... Things like hot chocolate, fish-sticks, doughnuts, peppermint candies, and especially anything Christmas related like spiced apple cider and eggnog seem to help towards a kiddish mood.
My general tenancy is still to avoid these things and keep myself healthy, though.
<3 Spiced apple cider... ^_^