When writing your "notes" about relatives that you remember, write down those words they said that "weren't quite proper," like "et" for "ate" and "het" for "heated." If Grandma had an unusual way of pronouncing a certain word, make a note of that--but do so in a kind way without being judgemental.
Grandma always said "bullnozer" for "bull dozer" and "manure" was always "bnure."
And even more importantly, record or note the way Grandma said certain family names. That can be a direct help to your research.