The established characters are easy to recall. I don't know why, but they come back to me instantly when I need them. It's the one-time-only characters that I don't remember where the voice I used came from.
Jim CummingsI have four daughters, with the two youngest being four years old and a year and a half. When one of my older daughters was in sixth grade, a classmate brought in their talking Winnie the Pooh doll for show and tell, so the next week my daughter one upped her classmates and brought me to school in for show and tell.
Jim Cummings