Never thought about it.
I have a WoT and a LoL account which are both worth a few hundred euros thanks to rare tanks and high elo, but what other than ibcluding the passwords in the will could I possibly do?
Also, once I die, those two games will most likely be dead too.
All my photos, videos, and torrented games are on my HDDs so unless you aren't a cloudfag I don't see a reason to even think about this.