i'll echo the above comments.
when my dad passed (he was NOT a gun collector) my mom was plenty young enough to 'handle' anything that wasn't written down.
when my mom passed just a few short year later, the details for 'what goes where' were VERY complete.
this taught me, in person, how things could be handled to ease the survivor's burden.
i started with an 'inventory', now in open office format, when i had little.
now that i have more than that, it is nice to know there is a printed copy and a digital copy (that my wife knows how to get at) of my beloved treasures.
unfortunately for her (or other heirs) i have copious notes accompanying each photo describing just how beloved that particular treasure is.
while i don't update prices/values super regular, what i do have written down has a date with it (this was $$$ in 1990) etc.
it was a booger to digitize the first time but very easy to update now.
'monkey