In my grandmother's house...
She used to have a lot of my father's old things but has been on a purge lately. So, unclear.
In my parents' house...
Of my father's...a small summer camp trophy for running 50 miles during the camp session, circa 1962-1964, follow by his JV track letter, circa 1964-1967.
Of mine...probably a middle school participation micro plaque or similar would be the oldest. The most interesting item is half of a broken hurdle I saved from the trash and hid in my parents' garage 15 years ago, no clue how old it is.
In my home...
Of mine...I have two synthetic running shirts from 2000 that still wick and that I still wear (probably most useful).
Of my wife's...probably the medal for her second half marathon, which she kept after watching me hang all my road race medals on a doorknob.