While I mostly favor the use of the third person to describe myself in common speech, lately I've been experimenting with the first person. Rather than saying "Aidan want to play." I occasionally try out "I want to play." I've also discovered the possessive case of the first person as well; however, I like to use this in a manner akin to the King James Bible. Here are some examples:
Do you want to play with mine toys?
Mine eye is hurting. Wash it out with water.
Daddy's white golf balls. Mine yellow golf balls.
I like the formality of the way this sounds. The first person seems like it might be quite useful.