most of my stuff is shared with my sister, but after I nearly died last year, I did put together an "If I die, open this" packet and taped it on the front of the door to my stash. It includes details on what I want done with UFOs and special items in my stash. I go in and update it every 3 or 4 months. I've also gone through all my books and marked with post-its the value. Luckily my mother and sister would know the value on most everything.